Exodus 30:34-38

Then the LORD said to Moses, “Take these sweet-smelling spices: resin, onycha, galbanum, and pure frankincense. Be sure that you have equal amounts of each. Make incense as a person who makes perfume would do. Add salt to it to keep it pure and holy. Beat some of the incense into a fine powder, and put it in front of the Ark of the Agreement in the Meeting Tent, where I will meet with you. You must use this incense powder only for its very special purpose. Do not make incense for yourselves the same way you make this incense. Treat it as holy to the LORD. Whoever makes incense like this to use as perfume must be cut off from his people.”