1 Chronicles 12:27

Jehoiada was the leader of [the house of] Aaron, and with him were 3,700,

2 Kings 11:4

Now in the seventh year Jehoiada [the priest, Jehosheba’s husband] sent for the captains of hundreds of the Carites and of the guard and brought them to him to the house of the Lord. Then he made a covenant with them and put them under oath in the house of the Lord, and showed them the king’s [hidden] son.

2 Kings 11:9

The captains of hundreds acted in accordance with everything that Jehoiada the priest commanded; and each of them took his men who were to come in (on duty) on the Sabbath, with those who were to go out (off duty) on the Sabbath, and they came to Jehoiada the priest.

2 Kings 25:18

The captain of the bodyguard took [captive] Seraiah the chief priest, Zephaniah the second priest, and the three doorkeepers [of the temple].

1 Chronicles 6:49-57

But [the line of] Aaron and his sons made offerings on the altar of burnt offering and on the altar of incense, ministering for all the work of the Holy of Holies (Most Holy Place), and [they did so] to make atonement for Israel, according to all that Moses, God’s servant, had commanded.

1 Chronicles 9:20

Phinehas the son of Eleazar was ruler over them in times past, and the Lord was with him.

1 Chronicles 27:17

of Levi, Hashabiah the son of Kemuel; of Aaron, 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
Phinehas the son of Eleazar was ruler over them in times past, and the Lord was with him.
2 Kings 11:4
Now in the seventh year Jehoiada [the priest, Jehosheba’s husband] sent for the captains of hundreds of the Carites and of the guard and brought them to him to the house of the Lord. Then he made a covenant with them and put them under oath in the house of the Lord, and showed them the king’s [hidden] son.
2 Kings 25:18
The captain of the bodyguard took [captive] Seraiah the chief priest, Zephaniah the second priest, and the three doorkeepers [of the temple].

Aaronites

1 Chronicles 6:49
But [the line of] Aaron and his sons made offerings on the altar of burnt offering and on the altar of incense, ministering for all the work of the Holy of Holies (Most Holy Place), and [they did so] to make atonement for Israel, according to all that Moses, God’s servant, had commanded.
1 Chronicles 27:17
of Levi, Hashabiah the son of Kemuel; of Aaron, Zadok;