Exodus 10:23

10:23 No one could see another person, and no one could rise from his place for three days. But the Israelites had light in the places where they lived.

Exodus 25:37

25:37 “You are to make its seven lamps, and then set its lamps up on it, so that it will give light to the area in front of it.

Exodus 27:20

Offering the Oil

27:20 “You are to command the Israelites that they bring to you pure oil of pressed olives for the light, so that the lamps will burn regularly.