For they performed the worship of their God and the service of purification, together with the singers and the gatekeepers in accordance with the command of David and of his son Solomon.
Moreover, David and the commanders of the army set apart for the service some of the sons of Asaph and of Heman and of Jeduthun, who were to prophesy with lyres, harps and cymbals; and the number of those who performed their service was:
For their office is to assist the sons of Aaron with the service of the house of the Lord, in the courts and in the chambers and in the purifying of all holy things, even the work of the service of the house of God,
But let no one enter the house of the Lord except the priests and the ministering Levites; they may enter, for they are holy. And let all the people keep the charge of the Lord.
And both the singers and the porters kept the ward of their God, and the ward of the purification, according to the commandment of David, and of Solomon his son.
For their office is to assist the sons of Aaron with the service of the house of the Lord, in the courts and in the chambers and in the purifying of all holy things, even the work of the service of the house of God,
But let no one enter the house of the Lord except the priests and the ministering Levites; they may enter, for they are holy. And let all the people keep the charge of the Lord.