Leviticus 24:3

Outside the veil of the Testimony, in the tabernacle of meeting, Aaron shall be in charge of it from evening until morning before the LORD continually; it shall be a statute forever in your generations.

Surrounding context

24:2 "Command the children of Israel that they bring to you pure oil of pressed olives for the light, to make the lamps burn continually.

24:3 Outside the veil of the Testimony, in the tabernacle of meeting, Aaron shall be in charge of it from evening until morning before the LORD continually; it shall be a statute forever in your generations.

24:4 He shall be in charge of the lamps on the pure gold lampstand before the LORD continually.

Translation and sources