And these are the singers, chief of the fathers of the Levites, who remaining in the chambers were free: for they were employed in that work day and night.
And stand in the holy place according to the divisions of the families of the fathers of your brothers the people, and after the division of the families of the Levites.
Therefore shall you abide at the door of the tabernacle of the congregation day and night seven days, and keep the charge of the LORD, that you die not: for so I am commanded.
At that time the LORD separated the tribe of Levi, to bear the ark of the covenant of the LORD, to stand before the LORD to minister to him, and to bless in his name, to this day.