Exodus 30:37

Revised Standard Version (RSV-CI)

And the incense which you shall make according to its composition, you shall not make for yourselves; it shall be for you holy to the Lord.

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Seven days you shall make atonement for the altar, and consecrate it, and the altar shall be most holy; whatever touches the altar shall become holy.

Whoever makes any like it to use as perfume shall be cut off from his people.”

And what is left of the cereal offering shall be for Aaron and his sons; it is a most holy part of the offerings by fire to the Lord.