The singers, the sons of Asaph, were also at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer; and the gatekeepers at each gate did not have to depart from their service, because the Levites their brethren prepared for them.

and all the Levitical singers, Asaph, Heman, Jeduthun, and their sons and kinsmen, clothed in fine linen, with cymbals, harps and lyres, standing east of the altar, and with them one hundred and twenty priests blowing trumpets

Then in the midst of the assembly the Spirit of the Lord came upon Jahaziel the son of Zechariah, the son of Benaiah, the son of Jeiel, the son of Mattaniah, the Levite of the sons of Asaph;

and from the sons of Elizaphan, Shimri and Jeiel; and from the sons of Asaph, Zechariah and Mattaniah;

Moreover, King Hezekiah and the officials ordered the Levites to sing praises to the Lord with the words of David and Asaph the seer. So they sang praises with joy, and bowed down and worshiped.

It came about whenever the chest was brought in to the king’s officer by the Levites, and when they saw that there was much money, then the king’s scribe and the chief priest’s officer would come, empty the chest, take it, and return it to its place. Thus they did daily and collected much money.