Ezekiel 44:15; Ezekiel 44:20

15 “ ‘But the Levitical priests, who are descendants of Zadok and who guarded my sanctuary when the Israelites went astray from me, are to come near to minister before me; they are to stand before me to offer sacrifices of fat and blood, declares the Sovereign LORD.

20 “ ‘They must not shave their heads or let their hair grow long, but they are to keep the hair of their heads trimmed.