Exodus 30:34-38

34The LORD also said to Moses, “Take fragrant spices—gum resin, onycha, galbanum, and pure frankincense—in equal measures, 35and make a fragrant blend of incense, the work of a perfumer, seasoned with salt, pure and holy. 36Grind some of it into fine powder and place it in front of the Testimony1 in the Tent of Meeting, where I will meet with you. It shall be most holy to you. 37You are never to use this formula to make incense for yourselves; you shall regard it as holy to the LORD. 38Anyone who makes something like it to enjoy its fragrance shall be cut off from his people.”