1 Chronicles 23:12-14

The sons of Kohath: Amram, Izhar, Hebron, and Uzziel—four in all. The sons of Amram: Aaron and Moses. Aaron was set apart to consecrate him as most holy, he and his sons forever, to burn incense before the LORD, attend to His service, and to bless [worshipers] in His name forever. But as for Moses the man of God, his sons were counted among the tribe of Levi.