Nehemiah 12:45
They performed the service of their God and the service of purification, along with the singers and gatekeepers,
1 Chronicles 25:1-26
David and the officers of the army also set apart some of the sons of Asaph, Heman,
1 Chronicles 23:28
“but their duty will be to assist the sons of Aaron with the service of the Lord’s temple, being responsible for the courts and the chambers, the purification of all the holy things, and the work of the service of God’s temple—
2 Chronicles 23:6
No one is to enter the Lord’s temple but the priests and those Levites who serve;