Nehemiah 12:27-31

And at the dedication of the wall of Jerusalem they sought the Levites out of all their places, to bring them to Jerusalem, to keep the dedication with gladness, both with thanksgivings, and with singing, with cymbals, psalteries, and with harps. And the sons of the singers gathered themselves together, both out of the plain round about Jerusalem, and from the villages of the Netophathites; also from Beth-gilgal, and out of the fields of Geba and Azmaveth: for the singers had builded them villages round about Jerusalem. And the priests and the Levites purified themselves; and they purified the people, and the gates, and the wall. Then I brought up the princes of Judah upon the wall, and appointed two great companies that gave thanks and went in procession; whereof one went on the right hand upon the wall toward the dung gate