Exodus 27:21

21 aIn the tent of meeting, boutside the veil that is before the testimony, Aaron and his sons shall tend it from evening to morning before the Lord. It shall be a statute forever to be observed throughout their generations by the people of Israel.

Exodus 30:8

8and when Aaron sets up the lamps at twilight, he shall burn it, a regular incense offering before the Lord throughout your generations.

Leviticus 24:2-4

2Command the people of Israel to bring you pure oil from beaten olives for the lamp, that a light may be kept burning regularly. 3Outside the veil of the testimony, in the tent of meeting, Aaron shall arrange it from evening to morning before the Lord regularly. It shall be a statute forever throughout your generations. 4He shall arrange the lamps on the clampstand of pure gold
Hebrew  the pure lampstand
before the Lord regularly.

2 Chronicles 13:11

11They offer to the Lord eevery morning and every evening burnt offerings and incense of sweet spices, set out fthe showbread on the table of pure gold, gand care for the golden lampstand that its lamps may hburn every evening. For we ikeep the charge of the Lord our God, but you have forsaken him.
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