'Darkness' in the Bible

And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.

And God saw the light, that it was good: and God divided the light from the darkness.

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

And to rule over the day and over the night, and to divide the light from the darkness: and God saw that it was good.

And when the sun was going down, a deep sleep fell upon Abram; and, lo, an horror of great darkness fell upon him.

And it cometh to pass -- the sun hath gone in, and thick darkness hath been -- and lo, a furnace of smoke, and a lamp of fire, which hath passed over between those pieces.