Exodus 30:6-8

6Put the altar in front of the canopy which ⌞hangs⌟ over the ark containing the words of my promise. I will meet with you there in front of the throne of mercy that is on the ark.

7“Aaron must burn sweet-smelling incense on this altar every morning when he takes care of the lamps.

8Also, when Aaron lights the lamps at dusk, he must burn incense. For generations to come an incense offering must burn constantly in the Lord’s presence.