Now these are the singers, the heads of fathers' houses of the Levites, dwelling in the chambers of the temple free from other service, for they were on duty day and night.
And Hezekiah the king and the princes commanded the Levites to sing praises to the Lord with the words of David and of Asaph the seer. And they sang praises with gladness, and they bowed down and worshiped.
and Mattaniah the son of Mica, son of Zabdi, son of Asaph, who was the leader to begin the thanksgiving in prayer, and Bakbukiah, the second among his brethren; and Abda the son of Shammua, son of Galal, son of Jeduthun.