Exodus 30:35

And of these they shall make compound incense mixed up by the art of an apothecary, a pure holy composition. And thou shalt beat some of it fine, and lay it over against the testimonies in the tabernacle of the testimony, where I shall make myself known to thee. It shall be to you a most holy incense.

And they shall make with it perfumed incense, tempered with the art of a perfumer, a pure holy work.