Exodus 30:34-36

34Then the Lord said to Moses, “Take for yourself spices, stacte and onycha and galbanum, spices with pure frankincense; there shall be an equal part of each.

35With it you shall make incense, a perfume, the work of a perfumer, salted, pure, and holy.

36You shall beat some of it very fine, and put part of it before the testimony in the tent of meeting 1where I will meet with you; it shall be most holy to you.