'Purified' in the Bible

And the priests and the Levites purified themselves; and they purified the people, and the gates and the wall.

And I commanded, and they purified the chambers; and thither brought I again the vessels of the house of God, the oblation and the frankincense.

And I purified them from all foreigners, and appointed the charges of the priests and the Levites, every one in his service;