from thirty years old and upward, even to fifty years old, everyone who can enter the service of ministry to do work in the tent of meeting.

Samuel’s Ministry

Now Samuel judged Israel all the days of his life.

David, with Zadok of the sons of Eleazar and Ahimelech of the sons of Ithamar, divided them according to their offices for their ministry.

These were their offices for their ministry when they entered the house of the Lord according to the ordinance given to them through their father Aaron, just as the Lord God of Israel had commanded him.

The priests stood at their posts, and the Levites also, with the musical instruments for the Lord, which King David had made for giving praise to the Lord—“for His faithfulness is everlasting”—whenever David gave praise through their ministry; the priests on the other side blew trumpets and all Israel was standing.