'Light' in the Bible

Looking at the earth, I saw that it was waste and without form; and to the heavens, that they had no light.

Give glory to the Lord your God, before he makes it dark, and before your feet are slipping on the dark mountains, and, while you are looking for a light, he makes it into deep dark, into black night.

These are the words of the Lord, who has given the sun for a light by day, ordering the moon and stars for a light by night, who puts the sea in motion, causing the thunder of its waves; the Lord of armies is his name.