Solomon then assigned the priests and the Levites their duties at the temple, and he followed the instructions that his father, the man of God, had given him. Some of the Levites were to lead music and help the priests in their duties, and others were to guard the temple gates
Hezekiah divided the priests and Levites into groups, according to their duties. Then he assigned them the responsibilities of offering sacrifices to please the Lord and sacrifices to ask his blessing. He also appointed people to serve at the temple and to sing praises at the temple gates.
When Herod was king of Judea, there was a priest by the name of Zechariah from the priestly group of Abijah. His wife Elizabeth was from the family of Aaron.
Hezekiah also appointed other men to take food and supplies to the priests and Levites whose homes were in the pastureland around the towns of Judah. But the priests had to be descendants of Aaron, and the Levites had to be listed in the official records.
And since Jeroboam and the kings of Israel that followed him would not allow any Levites to serve as priests, most Levites left their towns and pasturelands in Israel and moved to Jerusalem and other towns in Judah.
But only you and your sons can serve as priests at the altar and in the most holy place. Your work as priests is a gift from me, and anyone else who tries to do that work must be put to death.