'Darkness' in the Bible

And the earth was waste and empty, and darkness was on the face of the deep, and the Spirit of God was hovering over the face of the waters.

And God saw the light that it was good; and God divided between the light and the darkness.

And God called the light Day, and the darkness he called Night. And there was evening, and there was morning the first day.

and to rule during the day and during the night, and to divide between the light and the darkness. And God saw that it was good.

And as the sun was just going down, a deep sleep fell upon Abram; and behold, a horror, a great darkness, fell upon him.