Exodus 30:20-22

King James Version

²⁰ When they go into the tabernacle of the congregation, they shall wash with water, that they die not; or when they come near to the altar to minister, to burn offering made by fire unto the Lord:

²¹ So they shall wash their hands and their feet, that they die not: and it shall be a statute for ever to them, even to him and to his seed throughout their generations.

²² Moreover the Lord spake unto Moses, saying,