TSK · Numbers 8:6

And he said unto the people, Be ready against the third day: come not near a woman.

At that time Jehovah set apart the tribe of Levi, to bear the ark of the covenant of Jehovah, to stand before Jehovah to minister unto him, and to bless in his name, unto this day.

and he will sit as a refiner and purifier of silver, and he will purify the sons of Levi, and refine them as gold and silver; and they shall offer unto Jehovah offerings in righteousness.

Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye doubleminded.