1 Chronicles 12:27

Now 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 sent and brought the captains of hundreds of the Carites and of the guard, and brought them to him in 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 son.

2 Kings 11:9

So the captains of hundreds did according to all that Jehoiada the priest commanded. And each one of them took his men who were to come in on the sabbath, with those who were to go out on the sabbath, and came to Jehoiada the priest.

2 Kings 25:18

Then the captain of the guard took Seraiah the chief priest and Zephaniah the second priest, with the three officers of the temple.

1 Chronicles 6:49-57

But Aaron and his sons offered on the altar of burnt offering and on the altar of incense, for all the work of the most holy place, and to make atonement for Israel, according to all that Moses the servant of God had commanded.

1 Chronicles 9:20

Phinehas the son of Eleazar was ruler over them previously, and the Lord was with him.

1 Chronicles 27:17

for Levi, Hashabiah the son of Kemuel; for 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 previously, and the Lord was with him.
2 Kings 11:4
Now in the seventh year Jehoiada sent and brought the captains of hundreds of the Carites and of the guard, and brought them to him in 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 son.
2 Kings 25:18
Then the captain of the guard took Seraiah the chief priest and Zephaniah the second priest, with the three officers of the temple.

Aaronites

1 Chronicles 6:49
But Aaron and his sons offered on the altar of burnt offering and on the altar of incense, for all the work of the most holy place, and to make atonement for Israel, according to all that Moses the servant of God had commanded.
1 Chronicles 27:17
for Levi, Hashabiah the son of Kemuel; for Aaron, Zadok;