the Levitical singers dressed in fine linen and carrying cymbals, harps, and lyres were standing east of the altar, and with them were 120 priests blowing trumpets. The Levitical singers were descendants of Asaph, Heman, and Jeduthun and their sons and relatives.

In the middle of the congregation, the Spirit of the Lord came on Jahaziel (son of Zechariah, son of Benaiah, son of Jeiel, son of Mattaniah, a Levite from Asaph’s descendants),

Then King Hezekiah and the officials told the Levites to sing praise to the Lord in the words of David and of Asaph the seer. So they sang praises with rejoicing and bowed down and worshiped.

The singers, the descendants of Asaph, were at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer. Also, the gatekeepers were at each gate. None of them left their tasks because their Levite brothers had made preparations for them.