Exodus 30:34-36

34The Lord said to Moses, “Take one part fragrant spices (two kinds of gum resin and aromatic mollusk shells), and mix them with one part pure frankincense.

35Have a perfumer make it into fragrant incense, seasoned with salt, pure and holy.

36Grind some of it into a fine powder, and put it in front of ⌞the ark containing⌟ the words of my promise in the tent of meeting, where I will meet with you. You must treat it as most holy.