Exodus 30:20-22

International Standard Version

²⁰When they enter the Tent of Meeting or when they approach the altar to minister to make an offering by fire to the Lord, they are to wash with water so they don’t die. ²¹They are to wash their hands and their feet so that they don’t die, and it is to be for them a perpetual ordinance for Aaron^[a] and his seed from generation to generation.”