What do Christians Believe about the Length of the Creation Days?

By David P. Diaz, Ed.D.

[Note: The following article served as the first draft of a chapter in the book: The Genesis Labyrinth (2nd ed., 2020).]


Are the “days” of the creation story literal, 24-hour days?
Are the “days” of the creation story literal, 24-hour days?

The majority of scientists in the world today affirm that the creation of the universe could not have taken place in six 24-hour (i.e., solar) days. They claim there is just too much evidence to support a view that the universe is ancient: the creation events described in Genesis had to have occurred over billions of years. On the other hand, most Christians have generally taken an unbending literal view of creation: a universe and all life created in a single week. This has been a hotly contested subject for nearly the entire history of the Christian Church. The interpretations of the “days” of Genesis are more diverse than one might expect. I will explain what I consider to be the most important of the different theories below.

Let me first say that I have no compelling reason to dogmatically hold to any particular view with respect to the days of Genesis. If one believes in God, then one will surely agree that God could have created the universe in any number of ways and certainly in any time frame. But the question that confounds many is, “What time frame did He choose?” For the purpose of this article, the crucial question seems to be this: “Should the days of creation be interpreted in a firmly literal fashion, or is there another likely interpretation?”

Not All Words Can be Taken Literally1

Most Christians have generally taken a strict literal view of creation: a universe and all life created in a single week.

In answering the question posed above, one should recognize that anthropomorphic2 and figurative3 language is commonly used in Genesis. And if so, why couldn’t the days of creation be some sort of literary device?4

For example, Genesis 2:2 says: “By the seventh day God completed His work which He had done, and He rested on the seventh day from all His work which He had done” (NASB95, italics added). But did God truly need to “rest”? Isn’t it possible that an all-powerful, infinite Being was not truly worn out from His efforts? Indeed, isn’t it possible that this verse was merely referring to the completion of the creative process? In other words, just as the seventh day represents the end of any given week, the seventh creative day could have simply signaled the end of God’s creative process and said nothing about His need to rest.

So, since literary devices other than strict literal language were used in the early chapters of Genesis, it is quite possible that Moses5 had some other purpose in mind when referring to “days” in the creation narrative.

And what about the curse on the serpent? “Because you have done this… you will eat dust all the days of your life” (Gen. 3:14, NIV, italics added). Does the curse indicate that the future diet of the serpent would consist solely of dirt? Or could it simply mean that the serpent would henceforth become symbolic of evil, and would serve as a perpetual reminder of the temptation and fall of man? In this verse, the expression “eat dust” is an example of figurative or symbolic language.

So, since literary devices other than strict literal language were used in the early chapters of Genesis, it is quite possible that Moses5 had some other purpose in mind when referring to “days” in the creation narrative.

In the next few sections, I will present five perspectives on the meaning of the word “day” as it was used in the creation story. Each of these views has been widely held by Christians throughout the Church’s history, and there are sometimes overlapping elements across these positions.

Solar Day Theory

Perhaps the most popular view, historically, is that the six creative days were literal 24-hour days. While some early church fathers like Origen and Augustine did not interpret the days as 24-hour cycles, others, such as Martin Luther, defended a strict literal interpretation.

According to Allan P. Ross (1985, 28), the word “day” (Hebrew: yôm), when used in concert with ordinal numbers (first day, second day, third day, etc.), must refer to a 24-hour period because that particular construction always suggests a 24-hour day in the Old Testament. Thus, since this form was, in fact, used in the creation narrative, the days must be viewed literally.

Exodus 20:8–11 also seems to indicate a 24-hour day. The Israelites were instructed to work six days and rest on the seventh (i.e., sabbath day), just as God did in creation:

Remember the sabbath day, to keep it holy. Six days you shall labor and do all your work, but the seventh day is a sabbath…. For in six days the Lord made the heavens and the earth, the sea and all that is in them, and rested on the seventh day.”

(Ex. 20:8–11, NASB)

Adherents of the solar day theory believe that a strict literal interpretation of Genesis’s days best explains the biblical text. Accordingly, the Bible plainly teaches that God’s creative work was completed in a week of seven 24-hour days.   

Day-Age Theory

Genesis 2:4 is an example of the use of the Hebrew word yôm to mean a longer period of time: “This is the account of the heavens and the earth when they were created, in the day that the Lord God made earth and heaven”

Some have held that the days of Genesis were long periods of geological time. This position falls under the rubric of “day-age theory.” On this account, each day represented an extended period of time, separated in the biblical narrative by the following formulaic transition: “And there was evening, and there was morning—the [____] day.” These seven periods or stages are said to represent the geological and biological history of the universe, but there is no indication of how long each of the periods lasted, nor are the days necessarily of equal lengths. There is biblical support for this alternative meaning of the word “day.” Genesis 2:4 is an example of the use of the Hebrew word yôm to mean a longer period of time: “This is the account of the heavens and the earth when they were created, in the day that the Lord God made earth and heaven” (NASB95, italics added). This usage of the word day refers to the entire creative process and is clearly not intended to represent a single 24-hour period. Thus, the word yôm can be used to mean an indefinite or extended period of time.

Within the day-age framework, each day may have represented thousands, or even millions, of years (e.g., 2 Pet. 3:8; Ps. 90:4). The days of Genesis do refer to literal periods of time, but the intervals are not necessarily of equal duration. This view represents an attempt to harmonize the geological record with the days of Genesis.

Gap Theory

Adherents of this position agree with the scientific consensus that the universe and earth are very old and yet also support a plain, literal reading of the days of creation.

The gap theory is another way of viewing the days of Genesis. Though the defenders of this view have slight variations in their interpretations, the theory can be stated something like this: In long ages past, God created the entirety of the universe, which is described in the opening verse of Genesis: “In the beginning God created the heavens and the earth.” For the next few billion years, the universe expanded and developed, and after quite some time, the earth appeared as part of our solar system. On Earth, geological formations ebbed and flowed, and early life forms appeared and progressed. But, at some point in time, a cataclysmic event rendered the earth barren and uninhabitable (perhaps due to one of any number of mass extinction events). The state of the earth at that time was reflected in Genesis 1:2, “The earth was formless and void, and darkness was over the surface of the deep” (NASB95). So, sometime in relatively recent history, God reconditioned the earth in six literal days, which is described in Genesis 1:3–31. During that time, God took the earth, which was dark, formless, and empty, and once again made it habitable for all forms of life. In this view, there was a gap between verse 1, which was the original creation, and verse 3, which represented the beginning of the restructuring of the earth.

Adherents of this position agree with the scientific consensus that the universe and earth are very old and yet also support a plain, literal reading of the days of creation. Thus, in this view, each day represented a 24-hour period during which the various features of the earth were restructured to bring order out of chaos and to restore life to an uninhabited planet. By the seventh day, God had not only completed this creative activity, He had also reestablished order and stability in the geological and biological features of the world, which has continued to the present day.

Days as Description of Functions Theory6

There is another view that presents the days as literary devices used to convey the purpose or function of the features of creation. In this perspective, the days don’t necessarily refer to any particular period of time but rather serve as the vehicle through which God communicated His purpose for the different features of creation.7

This position takes its shape within the cultural background of the people to whom the creation account was originally written. How would they have understood the creation narrative? After many years serving as slaves in Egypt, the Israelites were concerned with a promised homeland where they could live in peace and security. To them, the creation story not only demonstrated God’s power to create everything that exists, but it also reinforced the value of man, above all other created things. It was this God who had promised to bring them into a land of their own possession.

By the time the book of Genesis was written, the seven-day week had been long established and was well-understood as a common unit of time. The analogy of the seven-day week served as an easy way to understand and remember the features of creation. The creation of night, day, sky, land, plants, lights in the heavens (i.e., planets, stars), animals, and humans, easily fit into the framework of the seven-day week, which was widely considered to be the number of perfection or completeness.8

The creation account represented a literal historical event, but it was not necessarily couched in strict literal language. Nor was it framed in scientific language: we should not expect to find scientific concepts hidden in the ancient Hebrew vocabulary.

Thus, Moses’s description of creation may have focused on the fact that God formed a world where everything in the created order had a function or purpose. The Genesis narrative explained that God’s purpose was to create every good thing for mankind and to call out a people for Himself who would become a blessing to the nations. The importance of the creation story was not to focus on the creation of matter, per se, but rather to show that God provided a function for each bit of matter so that the creation would be seen as a special blessing and an opportunity for mankind to flourish.

Pictorial Revelatory Day Theory

Another concept of the length of the creative days is called the pictorial revelatory day theory, which holds that the specifics of the days of creation were revealed in six days, not performed in six days. The purpose of the Genesis creation narrative was theological and religious. There was no need to describe how God created or how long it took—both of which were swallowed up in the theological expression of creation. In this perspective, the actual process of creation took place over billions of years, but God revealed the features of creation to early man in a vision of the past.

In ancient times, God sometimes communicated to man through dreams or visions. Bernard Ramm (1974) believed the prehistoric past was communicated to man through a vision in which the events of creation were revealed pictorially, visually, and optically—in very much the same manner as events of the future were revealed to the ancient prophets (p. 149 ff.). Therefore, each creative scene could have been revealed to man within the various days of a vision of the past. The days were not literal, nor were they age-days, but instead were pictorial revelatory days that served as the means through which God revealed Himself as the Creator of all.

This special revelation—if not given directly to Moses—could have been disclosed to one of his ancestors and then passed on to Moses through oral and, eventually, written tradition.


By all accounts, the creation of the universe and all living things took place long before the time of Moses. Since the actual creation was so far removed from the time and culture of the author, it is hard to know for sure how the days are to be interpreted.

Whatever the intent of the author of Genesis, the subject of the length of the creation days was clearly not a stated concern in the narrative. Moses did not dwell on the meaning of the term “day” as it was used in the creation story. This suggests one of two possible understandings: Either Moses had no reason to assume anything other than a literal 24-hour construct, or perhaps he simply understood that the concept of the seven-day week could serve as an easily accepted framework for discussing the important features of creation. After all, no humans were present to witness the days of creation and would, therefore, require a readily understood analogy to help them grasp the concept. If God communicated the creation story to ancient humans, then His language would have been commensurate with their understanding. But this means that God could have revealed the necessary details of creation either within a literal or a literary framework.

In summary, the length of days in Genesis could have been: (1) Literal 24-hour days that marked the first and only creation of the universe, the earth, and all life; (2) Age-days that represented long periods of indeterminate length; (3) Literal 24-hour days that marked the re-creation (i.e., upgrade) of the earth billions of years after the beginning of the universe; (4) Descriptions of the functions of creation presented in seven phases corresponding to a seven-day week; or (5) Pictorial revelatory days—a vision of creation that was revealed over the span of seven days.

About the Author

David P. Diaz, Ed.D., is an independent researcher, retired college professor, and publisher 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’s and Master of Science degree from California Polytechnic State University, a Master of Arts in Philosophical Apologetics from Houston Christian University, and a Doctor of Education specializing in Computing and Information Technology from Nova Southeastern University. 


Hartill, J. E. Principles of Biblical Hermeneutics. Grand Rapids, MI: Zondervan, 1975.

Ramm, B. L. The Christian View of Science and Scripture. Grand Rapids, MI: Eerdmans, 1974.

Ross, A. P. “Genesis.” In vol. 1 of The Bible Knowledge Commentary: An Exposition of the Scriptures, edited by J. F. Walvoord and R. B. Zuck. Wheaton, IL: Victor Books, 1985.

Walton, J. H. OT301 Origins of Genesis 1–3. Bellingham, WA: Lexham Press, 2014.


  1. For more information on the different types of language used in the Bible, please see the TIBP article: “How to Interpret the Bible.” http://thingsibelieveproject.net/how-to-interpret-the-bible/
  2. Anthropomorphic language ascribes human qualities, emotions, or ambitions to God. By ascribing human characteristics to God, the writer could make an infinite God seem more apprehensible to finite humans.
  3. Figurative language is a style of language that goes beyond the most common usage of words (i.e., literal usage), often by playing off a word’s literal meaning. Examples of figurative language types include simile, metaphor, and hyperbole.
  4. Literary devices are narrative techniques that grip the reader’s attention and imagination and convey information. There are literally hundreds of devices, although some of the most common ones in the Bible are metaphor, simile, hyperbole, symbolism, allegory, and parable.
  5. For evidence that Moses was the author of Genesis, please see the TIBP article: “Did Moses Write the Book of Genesis? http://thingsibelieveproject.net/did-moses-write-the-book-of-genesis/
  6. The name of this position is really of my own invention, but it is based on the overlapping features of a few of the other views listed in this article.
  7. The ideas expressed in this section were inspired by the following online course: OT301 Origins of Genesis 1–3, by John H. Walton.
  8. According to J. Edwin Hartill (1975, 115–116), the number seven “is the number of divine fullness and perfection (other numbers that share the meaning of completion or perfection are 3, 10, and multiples of 7). According to Hartill, “7 is one of the perfect numbers and comes from a Hebrew word meaning ‘to be complete,’ ‘to be full,’ ‘to be satisfied,’ ‘to have enough.’” As one looks through the Bible, it should be apparent that the number seven is used quite frequently. For example, the Hebrew text of Genesis 1:1—the statement of creation—consists of exactly seven words. There were seven days of creation, seven names in the genealogy of Cain, seven years of prosperity, followed by seven years of famine in Egypt (Gen. 41), and the seventh day represented the completion of God’s creative work.

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