Verses with the word lighten in the Old Testament (5 verses):

1 Samuel 6:5
Wherefore ye shall make images of your emerods, and images of your mice that mar the land; and ye shall give glory unto the God of Israel: peradventure he will lighten his hand from off you, and from off your gods, and from off your land.

2 Samuel 22:29
For thou art my lamp, O LORD: and the LORD will lighten my darkness.

Ezra 9:8
And now for a little space grace hath been shewed from the LORD our God, to leave us a remnant to escape, and to give us a nail in his holy place, that our God may lighten our eyes, and give us a little reviving in our bondage.

Psalms 13:3
Consider and hear me, O LORD my God: lighten mine eyes, lest I sleep the sleep of death;

Jonah 1:5
Then the mariners were afraid, and cried every man unto his god, and cast forth the wares that were in the ship into the sea, to lighten it of them. But Jonah was gone down into the sides of the ship; and he lay, and was fast asleep.