Exodus 30:6-10

30:6 “You are to put it in front of the curtain that is before the ark of the testimony (before the atonement lid that is over the testimony), where I will meet you. 30:7 Aaron is to burn sweet incense on it morning by morning; when he attends to the lamps he is to burn incense. 30:8 When Aaron sets up the lamps around sundown he is to burn incense on it; it is to be a regular incense offering before the Lord throughout your generations. 30:9 You must not offer strange incense on it, nor burnt offering, nor meal offering, and you must not pour out a drink offering on it. 30:10 Aaron is to make atonement on its horns once in the year with some of the blood of the sin offering for atonement; once in the year he is to make atonement on it throughout your generations. It is most holy to the Lord.”