The Problem of Suffering: A Theistic Defense

David P. Diaz, Ed.D.



The problem of suffering and evil in the world is, without question, problematic to the theistic position. Why do people suffer and die, sometimes in the most agonizing or seemingly pointless ways? Suffering and pain are conditions that are relevant to all humans. When we lose a loved one, we may experience intense psychological pain that overwhelms us. Furthermore, it is common to react viscerally to such frank horrors as those carried out in Auschwitz under Hitler’s Third Reich. The same can be said of Pol Pot’s Cambodian genocide or the many other calamities that have been perpetrated across the globe and throughout the ages.

Addressing the problem of suffering is made all the more difficult because of the passions evoked by the subject. Underlying heartache often causes us to abandon logic and lose ourselves in emotion. Thus, the problem of human suffering poses both objective and subjective challenges that make it a thorny issue no matter where one chooses to lay the blame.

When confronted with the question of why God would allow such evil and suffering to exist, many theists have no answer. After all, even if there are good reasons for allowing suffering, why suppose that God would reveal them to any given theist?[1] The fact that a theist does not have a ready answer to the problem of suffering and evil is not a deciding factor on whether belief in God is rational or irrational. A belief can be rational even if any given person lacks the knowledge or the ability to establish its rationality. To demonstrate that belief in God is irrational or unreasonable—based on the fact of evil in the world—a skeptic would need to press the argument further. Plantinga suggests that the skeptic must show that it is impossible or, at the very least, unlikely that God has good reasons for permitting evil.[2] Nevertheless, if there are no good reasons forthcoming, it sets the stage for skeptical arguments against the existence of God based on the fact of evil and suffering in the world.

The present paper will concern itself with the suffering experienced by adult human beings who possess fully functional mental abilities. The discussion will be delimited to three areas: human suffering, moral evil (to the extent that moral evil causes human suffering), and to the possible reasons why an all-good and all-powerful God might allow human suffering.

So-called natural evil[3] will only be considered as it relates to the suffering of humans since the problem of natural evil would not be raised if humans did not exist.

Definition of Terms

Suffering: To suffer means to be kept from being what one ought or desires to be.[4] Suffering is most often considered something bad or unpleasant. Chronic medical conditions, long-term physical abuse, and the psychological pain of losing a loved one are, indeed, examples of suffering. However, not all suffering violates a person’s will or desires. There are those who voluntarily suffer to achieve some end. For example, athletes and women in childbirth may gladly accept pain and suffering as a necessary part of becoming what they willingly desire (i.e., a great athlete or mother).[5] Other kinds of physical pain may often be recognized and welcomed as something one needs. Reflexive pain is desirable, for instance, when we involuntarily jerk our hands away from a fire before suffering serious injury. Pain also alerts us to the fact that there is something wrong with our body, thus prompting us to seek medical attention. Without this type of pain, we would not know, for example, that our shoes are too tight or that we have suffered a sprained ankle or acute appendicitis. Therefore, not all suffering is unneeded or unwanted. Further, there may also be some people who don’t realize that their sufferings impede their ultimate well-being. Slaves in the Antebellum South and geographically isolated women in the Arab world might be examples of those who wouldn’t fully grasp the true nature or extent of their suffering. Nevertheless, any existing condition where people are kept from achieving what they ought or desire to be can be viewed as a type of suffering.

Moral evil: The kind of evil that results from free human activity can be termed moral evil. Moral evil consists of actions contrary to God’s nature, will, or both.[6] Some moral evils can be perpetrated against other people (e.g., armed robbery, torture) and some evils may be self-directed (e.g., drug addiction). Either can be the cause of human suffering.

Theodicy: A theodicy is an attempt to demonstrate that there are morally sufficient reasons for God to allow evil and suffering in the actual world. The current paper is not a theodicy and will not attempt to explain why God allows suffering and evil in the present world. It may be beyond the capacity of finite humans to understand and explain the mind of an infinite God. In any case, this author will not presume to speak for God since it is not apparent that God has anywhere explained all, or even most, of his reasons for allowing evil. Instead, the author will attempt a theistic defense.

Theistic defense: A defense posits various reasons why an all-good, all-powerful God might allow evil and suffering in a “putatively possible world.” A putatively possible world is not just any world; it refers to a possible world where an all-good, all-powerful God exists, the central claims of Christianity are true, and suffering and evil exist (i.e., a world much like our own). The current paper is a defense and will, therefore, offer reasons why the God of a putatively possible world might choose to allow evil and suffering, even if these reasons may not hold in the actual world. In viewing the problem of suffering in this manner, the reader might see possible, but not necessarily actual, solutions of God in the world. These solutions will be something for the reader to ponder to determine for herself whether such reasons might be possible, plausible, or even probable.

Flourish: To flourish means to experience a close union of love with God. The Christian position is that all humans were created for the purpose of reaching fulfillment through a close loving relationship with God and with other humans and that this relationship might continue throughout eternity. Thus, the extent of flourishing is ultimately judged by one’s closeness to God but is also related to achieving one’s own desires insofar as they are aligned with the goal of achieving unity with God. This paper will explore whether some suffering may aid human flourishing in a putatively possible world.

An Argument and Theistic Defense

Statement of the Argument

There are a number of arguments that are used to cast doubt on the existence of God that appeal to the existence and prevalence of evil, suffering, and pain in the world. One argument from suffering goes like this: (1) there is suffering in the world and (2) there is an omniscient, omnipotent, perfectly good God, but (3) there is no morally sufficient reason for an omniscient, omnipotent, perfectly good God to allow suffering in the world. Therefore, (4) an omniscient, omnipotent, perfectly good God does not exist.

Theistic Defense: Overview

The current defense of theism versus the argument from suffering will grant that premises (1) and (2) are true. The defense will further concede that there seems to be an incompatibility between the simultaneous existence of an omniscient, omnipotent, perfectly good God and suffering in the world. Therefore, the defense will focus on premise (3) and consider whether God might have morally sufficient reasons for allowing suffering to exist. If it can be shown that premise (3) is false or unlikely, then the seeming incompatibility between premises (1) and (2) dissolves, and the argument from suffering loses its strength.

The following reasons may serve to explain why God allows suffering: (1) Some suffering may be essential to human flourishing; (2) It may be impossible to abolish all suffering without also eliminating human free will in the process; (3) God may not prevent some suffering because preventing it may lead to greater suffering; (4) It is possible that the suffering caused by human activity is a condition that brought about God’s redemptive action and may result in flourishing now and/or in the afterlife.

Suffering and Human Flourishing

Some suffering may be essential to human flourishing. Humans are made in the image and likeness of God (Gen. 1:26a) and, therefore, humans reflect, however imperfectly, God’s absolute goodness and love. In explaining the thoughts of Thomas Aquinas on the greatest good for mankind, philosopher Eleonore Stump said: “the ultimate good for any human person is union with God” [i.e., flourishing].[7] Thus, God wants all humans to flourish to the greatest extent possible, both now and in the afterlife.

One of the key questions presented by the problem of suffering is, “Can suffering contribute to flourishing?” The question can be subdivided as follows:[8] (1) Does the suffering allowed by God contribute to human flourishing (i.e., closeness to God)? (2) Does the suffering allowed by God help us achieve our own greatest desires? On the one hand, someone might argue that suffering prevents one from achieving closeness to God and/or from attaining one’s greatest desires. But on the other hand, perhaps suffering is useful in achieving one’s greatest purpose and desires.

In response to (1), suppose that suffering positively addresses the flourishing of humans by helping them achieve what they ought to be. In this important sense, suffering can be seen as God’s “medicine” for achieving one’s ultimate purpose.[9] Suffering may remove or modulate the obstacles (e.g., pride, self-centeredness, anger, greed, and others) that prevent humans from coming into a closer relationship of love with God. If a close unity with God is the greatest possible good for humans, then not only may flourishing be compatible with suffering, but indeed, some suffering might be essential to flourishing. For example, the lives of many Christians of the first and second centuries bear witness to the strength of their belief in God. Their relationship with God was more valuable than even their own lives. Indeed, Pliny the Younger, writing to the emperor Trajan, said that he attempted to make professed Christians curse the name of Christ. But he admitted that “those who are really Christians cannot be induced to [curse Christ’s name].”[10] Even under the threat of imprisonment and torture, these early Christians would choose God over the threats of their accusers. Such was their relationship with God that they could not be forced to deny their faith, even under extreme forms of moral evil. Not only did suffering—or the threat of suffering—not deter these Christians but they seemed compelled to endure all manner of evil for the surpassing value of knowing God (Phil. 3:7, 8; 2 Cor. 11:23–27).

Moreover, even non-believers in God may benefit through suffering. After noting that many documented studies have shown that people can and do benefit from the consequences of trauma and adversity, philosopher Eleonore Stump submits that God is present to every sufferer:

No sufferer is isolated from the love of omnipresent God; and to the extent to which the sufferer is open to it, the presence of God to that sufferer comes with shared attention and closeness, for the consolation of the sufferer.[11]

Thus, suffering may serve as God’s tool to help any and all humans to flourish.[12]

However, what about the kinds of suffering that are so severe that they destroy one’s moral responsibility for action and full mental functionality? For example, those subjected to prolonged torture such that they suffer irreversible physical and/or mental damage. Is it possible, then, that some types of severe suffering might not accomplish the greatest good of bringing one closer to God? It seems plausible that one could answer this question in the affirmative. Nevertheless, suppose God is always willing that humans should flourish, whether it be now or in the afterlife. In other words, suppose God’s purpose for humans is not only for the present world but is eternal in scope. This point is especially important to Stump, who believes that any response to the problem of suffering must necessarily include a mention of the afterlife:

If we insist that there be some response to the challenge of the argument from evil that does not make mention of the afterlife, in my view we consign such a response to failure… the notion of an afterlife is central to any attempt at theodicy (or defense) that is to have a hope of being successful. [13]

Since flourishing is primarily a function of the closeness of one’s relationship with God, suffering must be weighed against the potential benefits of one’s relationship with God now and/or in the afterlife. It is a mistake to think that permanent physical and/or psychological suffering renders one unable to flourish. Otherwise only those deemed “healthy” in body and mind would be able to flourish. Therefore, God may allow humans to experience severe and perhaps irreversible physical and/or psychological suffering in this life and yet provide them the opportunity to flourish now and/or in the afterlife.[14]

On the issue of helping humans become all they desire to be—Stump questions whether a human’s desires are necessarily in sync with all that they ought to be: “Sometimes humans can set their hearts on things that aren’t necessary for their flourishing.”[15] Though suffering has been shown to lead to spiritual regeneration, growth, and, hence, a closer relationship with God, there is no guarantee that any given individual will see suffering as a means to achieving her own desires. A loving and wise God would know what things people need to best establish their relationship with him. And, while the things that people desire can be positively correlated to unity with God, many desires—including those that are self-centered or uninformed—may not always lead to flourishing.

Suffering and God’s Omnipotence

There is no morally sufficient reason for an omniscient, omnipotent, perfectly good God to allow suffering in the world. There is an implicit assumption in this premise: An omnipotent God can do anything whatsoever. If this is true, then God can prevent suffering, and he would be morally deficient if he doesn’t.

Theologian Thomas Oden defines omnipotence as “the perfect ability of God to do all things that are consistent with the divine character.”[16] In other words, being all-powerful means that God can do anything as long as it is consistent with his nature. So, for example, God is always truthful (Jn. 33, 34) and his word is truth (Jn. 17:17). Therefore, God cannot lie (Tit. 1:2; Heb. 6:18). Also, God cannot not exist because he, by nature, exists eternally (Ps. 90:2). It should be understood that God cannot do anything that violates his own nature. God is who he is and nothing other. Thus, God cannot prevent suffering if, in so doing, it would contravene his nature.

Alvin Plantinga suggests that God is limited by what is logically possible. He states: “What the theist typically means when he says that God is omnipotent is not that there are no limits to God’s power, but at most that there are no nonlogical limits to what He can do.”[17] Indeed, some things are impossible for God like creating a square circle, a married bachelor, or a false truth. Thus, it is impossible for God to do things that are inconsistent with his nature and are logically impossible.

It may be impossible to abolish all suffering without also eliminating human free will in the process. It might be instructive to consider what might transpire if an all-powerful God chose to eliminate all suffering. Suppose that one person wanted to kill another using a gun; should an all-powerful God respond by turning the bullets into bubbles? Or, if someone picked up a rock to throw at another person, would God then turn the rock into a feather? This type of solution would obviate human free will. In such cases, human will would be replaced by the will of God who would be the one controlling the action. In such a world, it seems that chaos would be the result. God would have to regularly break the laws of nature to intercede in such a manner. There would be no regularity in the world. Indeed, miracles would likely be the norm. Plantinga aptly sums up the implications: “To create creatures capable of moral good, therefore, [God] must create creatures capable of moral evil; and He can’t give these creatures the freedom to perform evil and simultaneously prevent them from doing so.”[18] Plantinga suggests a possible principle: “A world containing creatures who are significantly free (and freely perform more good than evil actions) is more valuable, all else being equal than a world containing no free creatures at all.”[19] Thus, God may allow humans the freedom to choose between good and evil acts because he considers it more valuable to have creatures who can freely choose rather than not. If it is true that God places more value on free creatures, then perhaps one morally sufficient reason for him to allow some suffering is to preserve free will.[20]

Another problem might result if God chose to eliminate all suffering: perhaps greater suffering would result. Plantinga uses a thought experiment to show that God may not eliminate some suffering because doing so might bring about greater suffering:

You’ve been rock climbing. Still something of a novice, you’ve acquired a few cuts and bruises by inelegantly using your knees rather than your feet. One of these bruises is fairly painful. You mention it to a physician friend, who predicts the pain will leave of its own accord in a day or two. Meanwhile, he says, there’s nothing he can do, short of amputating your leg above the knee, to remove the pain. Now the pain in your knee is an evil state of affairs. All else being equal, it would be better if you had no such pain. And it is within the power of your friend to eliminate this evil state of affairs. Does his failure to do so mean that he is not a good person?[21]

Obviously, amputating a leg would cause greater suffering than allowing the lesser evil of short-term pain to run its course. From a finite perspective, some suffering may seem unnecessary or counterproductive to human flourishing. Nevertheless, it is possible that preventing such suffering might result in greater suffering.

In summary, it is entirely possible that an all-powerful, all-good God would not eliminate all suffering because doing so would either preclude human freedom or would bring about greater suffering.

Suffering and Human Culpability

Whether one is a believer or non-believer in God, she will probably agree that all humans are capable of evil and can inflict severe suffering on others if they so choose. However, neither the believer nor the non-believer needs to blame God for this human proclivity. After all, non-believers can’t truly assign responsibility for suffering to a God they don’t believe exists. The argument from suffering is posed and operates under the working assumption that the God of Christian theism exists and has attributes that are derived from the Bible. Therefore, there is no fallacy or logical violation when one responds to the argument by appealing to the same source: The Bible.

For example, the doctrine of original sin explains the human propensity for evil actions (Rom. 5:12). Therefore, the responsibility for some suffering may reside solely with human free agents acting of their own accord (Rom. 3:9–18). The human propensity for causing suffering (called “sin” in the Bible) is a result of people turning away from God and following their own desires (Rom. 1:28–32). Such a condition is not compatible with flourishing. In Christian doctrine, Christ—who is both God and man—became the perfect sacrifice (Heb. 9:14) to redeem human creatures whose natural inclinations drive them to commit moral evil. In their natural state, humans are both mortal and corruptible [22] and yet ultimately redeemable. The predisposition to commit moral evil is why, in Christian theology, all humans must be redeemed by God’s grace through faith in Christ (Eph. 2:8; Gal. 2:16). Thus, redemption represents the solution for a lack of flourishing (Rom. 3:23, 24). Further, redemption will allow humans to flourish in the afterlife since, without redemption, humans will not share the afterlife with God (Jn. 3:36).

According to Aquinas, the worst possible condition of humans is that they would never achieve, or even desire to achieve, a real closeness of love with God and that that condition might last eternally.[23]


The basic argument from suffering claims that suffering exists, God exists, and an all-powerful, all-good God does not have morally sufficient reasons for allowing suffering. Therefore, God cannot exist. However, a theistic defense casts this argument in a different light by asking a person to consider a putatively possible world in which God and suffering both exist. The current paper provided four reasons why God might allow suffering to exist and, therefore, why he might have morally sufficient reasons for allowing suffering.

It may be that the greatest good for humans is flourishing. Therefore, whatever brings one closer to God represents an aid to flourishing. If it is possible that suffering aids flourishing by removing obstacles that prevent humans from establishing a closer relationship with God, then suffering may be compatible with flourishing.

It is tempting to think that an all-powerful, all-good God could and would eliminate all suffering. However, there may be larger concerns that are opaque to our finite understanding. Even if an all-powerful God could eliminate suffering, perhaps an all-good God would not. Maybe the reason for not removing all suffering is that such a process would preclude human freedom or would bring about greater suffering. Giving people free will and then rescinding it every time it is used to cause suffering would leave humans bereft of true freedom. God may allow humans to freely choose between good and evil acts because he considers it more valuable than not to have truly free creatures.

The responsibility for evil and suffering may lie solely with free human agents acting of their own volition. The human propensity for evil may result from turning one’s back on God’s commands and pursuing one’s own desires. This is why all humans need redemption, which represents a step forward in achieving the greatest possible good: a close unity of love with God.

In the end, those interested in the problem of suffering must ask and answer the following question: “Is it possible that there are morally sufficient reasons for God to allow suffering?” It has been suggested that some suffering might be compatible with human flourishing. Further, God may have allowed some evils to exist because removing them might pre-empt free will and/or cause greater evils. Finally, some suffering results from the free choices of humans, and this propensity to sin can only be remitted through the redeeming work of Jesus Christ. Only the reader can decide whether these might represent morally sufficient reasons for God to allow suffering.

About the Author

David P. Diaz, Ed.D. is an author, retired college professor, and the publisher and owner of Things I Believe Project. His writings have spanned the gamut from peer-reviewed technical articles to his memoir, which won the 2006 American Book Award. Dr. Diaz holds a Bachelor of Science (B.S.) and Master of Science (M.S.) degrees from California Polytechnic State University and a Doctor of Education (Ed.D.) degree from Nova Southeastern University.


Athanasius. On the Incarnation. Translated by John Behr. Yonkers, NY: St Vladimir’s Seminary Press, 2011.

Bergmann, Michael, Michael J. Murray, and Michael C. Rea, eds. Divine Evil?: The Moral Character of the God of Abraham. Oxford: Oxford University Press, 2013.

Copan, Paul. Is God a Moral Monster?: Making Sense of the Old Testament God. Grand Rapids, MI: Baker Books, 2011.

Diaz, David P. “Socratic Dialogue: Does Man Have Free Will?” No pages. Cited 7 October 2021. Online:

Oden, Thomas C. Classic Christianity: A Systematic Theology. New York, NY: Harpercollins Publishers Inc, 2009.

Plantinga, Alvin. God, Freedom and Evil. Grand Rapids, MI: William B. Eerdmans, 2008.

Stump, Eleonore. Wandering in Darkness: Narrative and the Problem of Suffering. Oxford: Clarendon Press, 2013.

Stump, Eleonore. “Suffering, Evil, and the Desires of the Heart.” The Table, Biola CCT. February 9, 2018. Educational video, 1:12:06.

Trakakis, N. N., ed. The Problem of Evil: Eight Views in Dialogue. Oxford, UK: Oxford University Press, 2018.


[1] Alvin Plantinga, God, Freedom and Evil, Kindle ed., (Grand Rapids, MI: William B. Eerdmans, 2008), Kindle location 97.

[2] Ibid., Kindle location 112–13.

[3] Natural evil refers to suffering that is due to the causes of nature: earthquakes, tsunami’s, hurricanes, lightning strikes, viruses, and others.

[4] Eleonore Stump, Wandering in Darkness: Narrative and the Problem of Suffering (Oxford: Clarendon Press, 2013), 90–107.

[5] Ibid., 5–6.

[6] Ibid., 11.

[7] Ibid., 93.

[8] Ibid., 455–465.

[9] Eleonore Stump, “The Problem of Suffering: a Thomistic Approach,” in N. N. Trakakis, ed., The Problem of Evil: Eight Views in Dialogue (Oxford, UK: Oxford University Press, 2018), 17.

[10] Pliny the Younger, Epistulae X, 96.

[11] Stump, Wandering in Darkness, 411.

[12] Though according to Christian doctrine there will be no more suffering in the afterlife (Rev. 21:4), some suffering in this life may be instrumental in bringing one to salvation. Thus, entrance into the afterlife may be attributed, at least in part, to suffering.

[13] Ibid., 419.

[14] Eleonore Stump, “The Problem of Evil and the History of the Peoples: Think Amalek,” in Michael Bergmann, Michael J. Murray, and Michael C. Rea, eds., Divine Evil?: The Moral Character of the God of Abraham (Oxford: Oxford University press, 2013), 37–39.

[15] Eleonore Stump, “Suffering, Evil, and the Desires of the Heart,” The Table, Biola CCT. February 9, 2018. Educational video, 1:12:06.

[16] Thomas C. Oden, Classic Christianity: A Systematic Theology. (New York, NY: HarperOne, 2009), 51.

[17] Plantinga, God, Freedom, and Evil, Kindle locations 184–85.

[18] Ibid., 342–343.

[19] Ibid., Kindle Locations 340-341.

[20] Of course, all of this presupposes that humans possess libertarian free will. That is, that humans can make a choice or choose otherwise at any given time. Though this topic is not addressed in this paper, the author has addressed it elsewhere: David P. Diaz, “Socratic Dialogue: Does Man Have Free Will?,” n.p. [cited 7 October 2021]. Online:

[21] Ibid., Kindle locations 202–206.

[22] Athanasius, On the Incarnation, trans. John Behr (Yonkers, NY: St Vladimir’s Seminary Press, 2011), 54.

[23] As cited in Stump, Wandering in Darkness, 387.

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