And they shall be upon Aaron, and upon his sons, when they come in unto the tabernacle of meeting, or when they come near unto the altar to minister in the holy place; that they bear not iniquity, and die: it shall be a statute forever unto him and his descendants after him.
And he shall put the incense upon the fire before the LORD, that the cloud of the incense may cover the mercy seat that is upon the testimony, that he die not:
And the LORD said unto Moses, Speak unto Aaron your brother, that he come not at all times into the holy place within the veil before the mercy seat, which is upon the ark; that he die not: for I will appear in the cloud upon the mercy seat.
Therefore shall you keep my ordinance, that you commit not any one of these abominable customs, which were committed before you, and that you defile not yourselves therein: I am the LORD your God.
And you shall bear no sin by reason of it, when you have offered from it the best of it: neither shall you pollute the holy things of the children of Israel, lest you die.