The earth was formless and void or a waste and emptiness, and darkness was upon the face of the deep [primeval ocean that covered the unformed earth]. The Spirit of God was moving (hovering, brooding) over the face of the waters.

God saw that the light was good (pleasing, useful) and He affirmed and sustained it; and God separated the light [distinguishing it] from the darkness.

And God called the light day, and the darkness He called night. And there was evening and there was morning, one day.

to rule over the day and the night, and to separate the light from the darkness; and God saw that it was good and He affirmed and sustained it.

When the sun was setting, a deep sleep overcame Abram; and a horror (terror, shuddering fear, nightmare) of great darkness overcame him.

When the sun had gone down and a [deep] darkness had come, there appeared a smoking brazier and a flaming torch which passed between the [divided] pieces [of the animals].