1 Chronicles 12:27

and Jehoiada is the leader of the Aaronite, and with him are three thousand and seven hundred,

2 Kings 11:4

And in the seventh year hath Jehoiada sent and taketh the heads of the hundreds, of the executioners and of the runners, and bringeth them in unto him, to the house of Jehovah, and maketh with them a covenant, and causeth them to swear in the house of Jehovah, and sheweth them the son of the king,

2 Kings 11:9

And the heads of the hundreds do according to all that Jehoiada the priest commanded, and take each his men going in on the sabbath, with those going out on the sabbath, and come in unto Jehoiada the priest,

2 Kings 25:18

And the chief of the executioners taketh Seraiah the head priest, and Zephaniah the second priest, and the three keepers of the threshold,

1 Chronicles 6:49-57

And Aaron and his sons are making perfume on the altar of the burnt-offering, and on the altar of the perfume, for all the work of the holy of holies, and to make atonement for Israel, according to all that Moses servant of God commanded.

1 Chronicles 9:20

and Phinehas son of Eleazar hath been leader over them formerly; Jehovah is with him.

1 Chronicles 27:17

of the Levite, Hashabiah son of Kemuel; of the Aaronite, Zadok;

Treasury of Scripture Knowledge

Summary

And Jehoiada was the leader of the Aaronites, and with him were three thousand and seven hundred;

Bible References

The leader

1 Chronicles 9:20
and Phinehas son of Eleazar hath been leader over them formerly; Jehovah is with him.
2 Kings 11:4
And in the seventh year hath Jehoiada sent and taketh the heads of the hundreds, of the executioners and of the runners, and bringeth them in unto him, to the house of Jehovah, and maketh with them a covenant, and causeth them to swear in the house of Jehovah, and sheweth them the son of the king,
2 Kings 25:18
And the chief of the executioners taketh Seraiah the head priest, and Zephaniah the second priest, and the three keepers of the threshold,

Aaronites

1 Chronicles 6:49
And Aaron and his sons are making perfume on the altar of the burnt-offering, and on the altar of the perfume, for all the work of the holy of holies, and to make atonement for Israel, according to all that Moses servant of God commanded.
1 Chronicles 27:17
of the Levite, Hashabiah son of Kemuel; of the Aaronite, Zadok;