OT-HISTORY.filter - rsv purified:

rsv@Ezra:6:20 @ For the priests and the Levites had purified themselves together; all of them were clean. So they killed the passover lamb for all the returned exiles, for their fellow priests, and for themselves;

rsv@Nehemiah:12:30 @ And the priests and the Levites purified themselves; and they purified the people and the gates and the wall.