The argument is God created the environments on days 1 to 3, a different environment each day, and filled those environments on the next 3 days; day 4 corresponding to day 1, 5 to 2 and 6 to 3. So how symmetrical is Genesis 1?
Going thru Genesis 1 what is created when?
- Day 1: Light, day(time), nighttime
- Day 2: Expanse (sky, space, heavens)
- Day 3: Land, seas, plants
- Day 4: Sun, moon, stars
- Day 5: Water animals, air animals
- Day 6: Land animals, man
We have day 5 creatures filling the sea of day 3 and flying on the face of the expanse of day 2
And day 6 creatures live on the land of day 3.
While there is some correspondence between 1 and 4, 2 and 5, 3 and 6, it is neither exact nor compelling, and inadequate to override the several other evidences that Genesis 1 is literal narrative history.