Thematic Bible: Required to wash in the brazen laver before they performed their services

You shall also make a laver of bronze, and its base also of bronze, for washing: and you shall put it between the tabernacle of meeting and the altar, and you shall put water in it. For Aaron and his sons shall wash their hands and their feet there: When they go into the tabernacle of meeting, 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: read more.
So they shall wash their hands and their feet, that they die not: and it shall be a statute forever to them, even to him and to his descendants throughout their generations.