Most of the Levitical priests, who had been responsible for profaning the temple in the past, would have to bear the punishment for their iniquity. They would be able to minister in the temple by overseeing the gates and serving in the temple precincts in other ways, perhaps as foreigners had done previously. They could also slaughter the sacrificial animals at the inner gate complexes (cf. Ezekiel 40:38-43). Under the Mosaic system of worship, the offerer, rather than the priest, killed the sacrificial victim. However, since the Levitical priests had led in the ritual worship of idols and so caused the other Israelites to stumble in their walk with God, the Lord would judge them by limiting their service in the millennial temple. [source][source][source]