Nehemiah 12:29

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 giving thanks, and with singing, with cymbals, stringed instruments, and with harps.

The sons of the singers gathered themselves together, both out of the plain around Jerusalem, and from the villages of the Netophathites;

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 on the wall, and appointed two great companies who gave thanks and went in procession. [One went] on the right hand on the wall toward the dung gate;