A Day of Creation

The “Days” of Genesis 1

What does the Bible tell us about the meaning of “day” in Genesis 1? A word can have more than one meaning, depending on the context. For instance, the English word “day” can have perhaps 14 different meanings. For example, consider the following sentence: “Back in my grandfather’s day, it took 12 days to drive across the country during the day.”

Here the first occurrence of “day” means “time” in a general sense. The second “day,” where a number is used, refers to an ordinary day, and the third refers to the daylight portion of the 24-hour period. The point is that words can have more than one meaning, depending on the context.

To understand the meaning of “day” in Genesis 1, we need to determine how the Hebrew word for “day,” yom, is used in the context of Scripture. Consider the following:
•A typical concordance will illustrate that yom can have a range of meanings: a period of light as contrasted to night, a 24-hour period, time, a specific point of time, or a year.
•A classic, well-respected Hebrew-English lexicon8 (a dictionary) has seven headings and many subheadings for the meaning of yom—but it defines the creation days of Genesis 1 as ordinary days under the heading “day as defined by evening and morning.”
•A number and the phrase “evening and morning” are used with each of the six days of creation (Gen. 1:5, 8, 13, 19, 23, 31).
•Outside Genesis 1, yom is used with a number 359 times, and each time it means an ordinary day.9 Why would Genesis 1 be the exception?10
•Outside Genesis 1, yom is used with the word “evening” or “morning”11 23 times. “Evening” and “morning” appear in association, but without yom, 38 times. All 61 times the text refers to an ordinary day. Why would Genesis 1 be the exception?12
•In Genesis 1:5, yom occurs in context with the word “night.” Outside of Genesis 1, “night” is used with yom 53 times, and each time it means an ordinary day. Why would Genesis 1 be the exception? Even the usage of the word “light” with yom in this passage determines the meaning as ordinary day.13
•The plural of yom, which does not appear in Genesis 1, can be used to communicate a longer time period, such as “in those days.”14 Adding a number here would be nonsensical. Clearly, in Exodus 20:11, where a number is used with “days,” it unambiguously refers to six earth-rotation days.
•There are words in biblical Hebrew (such as olam or qedem) that are very suitable for communicating long periods of time, or indefinite time, but none of these words are used in Genesis 1.15 Alternatively, the days or years could have been compared with grains of sand if long periods were meant.