Exodus 40:30

⁷You shall set the basin between the Tent of Meeting and the altar, and shall put water therein.

¹⁸“You shall also make a basin of bronze, and its base of bronze, in which to wash. You shall put it between the Tent of Meeting and the altar, and you shall put water in it. ¹⁹Aaron and his sons shall wash their hands and their feet in it. ²⁰When they go into the Tent of Meeting, they shall wash with water, that they don’t die; or when they come near to the altar to minister, to burn an offering made by fire to the LORD. ²¹So they shall wash their hands and their feet, that they not die. This shall be a statute forever to them, even to him and to his descendants throughout their generations.”

²⁵I will sprinkle clean water on you, and you will be clean. I will cleanse you from all your filthiness and from all your idols.

²²let’s draw near with a true heart in fullness of faith, having our hearts sprinkled from an evil conscience and having our body washed with pure water,

⁸He made the basin of bronze, and its base of bronze, out of the mirrors of the ministering women who ministered at the door of the Tent of Meeting.