Exodus 30:6-8

6And thou shalt put it in front of the veil which is before the ark of the testimony in front of the mercy-seat which is over the testimony, where I will meet with thee.

7And Aaron shall burn thereon fragrant incense: every morning, when he dresseth the lamps, he shall burn the incense.

8And when Aaron lighteth the lamps between the two evenings, he shall burn the incense — a continual incense before Jehovah throughout your generations.