TSK · Numbers 8:6

He said to the people,“Be ready for the third day. Do not approach your wives for marital relations.”

At that time the LORD set apart the tribe of Levi to carry the ark of the LORD’s covenant, to stand before the LORD to serve him, and to formulate blessings in his name, as they do to this very day.

He will act like a refiner and purifier of silver and will cleanse the Levites and refine them like gold and silver. Then they will offer the LORD a proper offering.

Draw near to God and he will draw near to you. Cleanse your hands, you sinners, and make your hearts pure, you double-minded.