Hypothesis 1

Planet earth on the second day as concentric layers of sediment around a gravitational singularity

We have a Biblical basis for the core accretion model and the origin and timing of Precambrian fossils which were deposited synchronously with the formation of an Oxygen-rich atmosphere.

The Creation of Gravity

a drawing compass and the creation of gravity on the second day

In a similar manner to that in which God said: Let there be light, the light was a reaction to nuclear fusion; when God said, Let there be a firmament in the midst of the waters, it was a reaction to the creation of of gravity.

Precambrian

Scripture includes a description of the deposition of Precambrian sediment in response to the creation of gravity on the 2nd day. That may seem far-fetched, but it's an example of Biblical exposition.

The Core Accretion Model

Planet earth on the second day as concentric layers of sediment around a gravitational singularity

They key to understanding the inception of gravity as the creative act of the second day is the synchronicity between stretching out the heavens and establishing the foundations of the Earth. One command did both.