Exodus 30:35-37

Amplified Bible

³⁵ and make incense with it, a perfume, the work of a perfumer, salted, pure and sacred. ³⁶ You shall crush some of it [into a] very fine [powder], and put some of it before the Testimony in the Tent of Meeting, where I will meet with you; it shall be most holy to you. ³⁷ The incense which you shall make, you shall not make in the same proportions for yourselves; it shall be holy to you for the Lord.