Genesis:The Beginning
Origins
There are a least two theories on the creation days: (1) the creation days are twenty-four-hour days, and (2) the creation days referred to in Genesis are long periods of time. It is true that God’s redemptive plan does not “rise or fall” on whether the creation days were twenty-four-hour days or longer periods of time.
“The word ‘day’ has variable meanings. In Ge. 1:5 it is used as a term for Light. In Ge. 1:8, 13 it seems to mean a day of 24 hours. In Ge. 1:14, 16 it seems to bean a twelve-hour day. In Ge. 2:4 it implies the whole creation period. In such passages as 2 Ti. 1:12 it seems to refer to the era beyond the Lord’s Second Coming, and in Ps. 90:4 and 2 Pe. 3:8’one day is with the Lord as a thousand years, and a thousand years as one day.’ ”