The ‘Day/Age’ Theory argues that each of the days in Genesis 1 were actually long ages of time. This, of course, is an attempt to harmonize Biblical teaching of a young earth with the false claims of some scientists who claim our earth and universe are billions of years old. Here are some simple affirmative arguments to prove that the days of creation in Genesis 1 were literal 24 hour days rather than long ages of time:
1) God defined His own terms in Genesis 1:5. “And God called the light Day and the darkness he called Night. And the evening and the morning were the first day.” A period of light followed by a period of darkness constituted a day. Unless someone wants to argue that it stayed light for long periods and then stayed dark for long periods (which, of course, poses huge difficulties), we will have to stand upon this clear statement and conclude that the days really were literal 24 hour days. Furthermore, Genesis 1:14-18 mentions the sun and moon and stars, and says they were made to be “for signs, and for seasons, and for days, and years.” If we are to believe that the days were actually long ages of time, then what were the seasons and years?
2) Romans 1:20 says, “Since the creation of the world God’s invisible qualities – his eternal power and divine nature – have been clearly seen, being understood from what has been made” (NIV). This verse claims that someone has been here to see and understand God’s power ever since the creation of the world. This poses no problem to those of us who believe that man was created within the same actual week that everything else was created. But, those who want to believe that each day represents a long “age” have a problem. If man was created eons after the other elements of creation were formed, then this makes no sense. This line of reasoning is confirmed by Jesus’ own statement in Mark 10:6. “From the beginning of the creation God made them male and female.” The day/age theory places man at the end of millions or billions of years of geologic time. It light of these verses, it cannot be true.
3) If the days were actually long “ages”, then we have the wrong chronological order of events. For instance, plants were created on day three, but insects were not created until day five or six. But many plants depend on insects for cross-pollination, etc. How did plants survive for long “ages” without their needed counterparts in the insect world? Other similar problems of chronological order exist that strongly argue against the day/age theory.
We know that this day/age theory is commonly held by many who teach the false doctrine of theistic evolution. It is not true, and is actually an unnecessary attempt to compromise the truths taught in the Bible with the unproven claims of some scientists. They teach that we live in an ancient universe, while in actuality we live in a relatively young universe that was created in six literal days by our omnipotent God.
– by Greg Gwin