'Light' in the Bible

I saw the earth, and, behold, it was waste and void; and the heavens, and they had no light.

Give glory to Yahweh your God, before he causes darkness, and before your feet stumble on the dark mountains, and, while you look for light, he turns it into the shadow of death, and makes it gross darkness.

Moreover I will take from them the voice of mirth and the voice of gladness, the voice of the bridegroom and the voice of the bride, the sound of the millstones, and the light of the lamp.

Thus says Yahweh, who gives the sun for a light by day, and the ordinances of the moon and of the stars for a light by night, who stirs up the sea, so that its waves roar; Yahweh of Armies is his name: