Exodus Chapter 29, Verse 37
From BibleWiki
37: Seven days thou shalt make an atonement for the altar, and
sanctify it; and it shall be an altar most holy: whatsoever
toucheth the altar shall be holy.
37: Seven days shalt thou expiate the altar and sanctify it, and it
shall be most holy. Every one, that shall touch it, shall be holy.
37: Seven days shalt thou purify the altar and sanctify it; and the altar shall be most holy, every one that touches the altar shall be hallowed.
Exodus Chapter 29, Verse 37/commentary

