Leviticus 24:1-3
The Lamp and the Bread of the Sanctuary
1 Then the Lord spoke to Moses, saying,
2 “Command the sons of Israel that they bring to you (A)clear oil from beaten olives for the (a)light, to make a lamp (b)burn continually.
3 Outside the veil of testimony in the tent of meeting, Aaron shall keep it in order from evening to morning before the Lord continually; it shall be a perpetual statute throughout your generations.