I'd like to offer a different idea. It's all true, and God is telling us truth.Let me offer an idea.
Moses tells us (as recorded in scripture) that in the beginning, the earth was formless and void.
The earth was formless and void, and darkness was over the surface of the deep, and the Spirit of God was moving over the surface of the waters.
-in the beginning (of this episode) -He's telling a story. It's imagery that he is relating to us, not something that he was witness to. Do you see that? It's the equivalent of the modern- 'Once upon a time' which doesn't have to refer to a fairy tale, but simply--- earlier.
Much love!