Ezekiel 44:15-16

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 .

16They alone are to enter my sanctuary; they alone are to come near my table to minister before me and serve me as guards.