When the sun had set and darkness had fallen, a smoking firepot with a blazing torch appeared and passed between the pieces.
Genesis 15:17 (NIV)
When you see this text as an echo of Genesis 1 and 2, you’ll understand that “let there be light” doesn’t have to be a blinding light. It can be a torch, just bright enough to know which direction to look.
And behold: God is in the space between the things that are separated.