Exodus 30:34-36

34Then Adonai said to Moses, “Take the sweet spices—stacte, onycha and galbanum. The spices and pure frankincense are to be in equal measures.

35Make a fragrant mixture from them, a blend like the work of the perfumer, seasoned with salt, pure and holy.

36You are to beat some of it into powder, and set it before the Testimony in the Tent of Meeting, where I will meet with you. It is to be most holy to you.