1 Chronicles 26:32

And his brethren, men of valor, were two thousand and seven hundred, heads of fathers houses , whom king David made overseers over the Reubenites, and the Gadites, and the half-tribe of the Manassites, for every matter pertaining to God, and for the affairs of the king.

2 Chronicles 19:11

And, behold, Amariah the chief priest is over you in all matters of Jehovah; and Zebadiah the son of Ishmael, the ruler of the house of Judah, in all the king's matters: also the Levites shall be officers before you. Deal courageously, and Jehovah be with the good.

1 Chronicles 12:37

And on the other side of the Jordan, of the Reubenites, and the Gadites, and of the half-tribe of Manasseh, with all manner of instruments of war for the battle, a hundred and twenty thousand.

1 Chronicles 15:12

and said unto them, Ye are the heads of the fathers houses of the Levites: sanctify yourselves, both ye and your brethren, that ye may bring up the ark of Jehovah, the God of Israel, unto the place that I have prepared for it.

1 Chronicles 23:24

These were the sons of Levi after their fathers houses, even the heads of the fathers houses of those of them that were counted, in the number of names by their polls, who did the work for the service of the house of Jehovah, from twenty years old and upward.

1 Chronicles 24:31

These likewise cast lots even as their brethren the sons of Aaron in the presence of David the king, and Zadok, and Ahimelech, and the heads of the fathers houses of the priests and of the Levites; the fathers houses of the chief even as those of his younger brother.

Treasury of Scripture Knowledge

Summary

And his brethren, men of valour, were two thousand and seven hundred chief fathers, whom king David made rulers over the Reubenites, the Gadites, and the half tribe of Manasseh, for every matter pertaining to God, and affairs of the king.

Men of valour

Reubenites

Bible References

Men of valour

1 Chronicles 26:6
Also unto Shemaiah his son were sons born, that ruled over the house of their father; for they were mighty men of valor.

Chief fathers

1 Chronicles 15:12
and said unto them, Ye are the heads of the fathers houses of the Levites: sanctify yourselves, both ye and your brethren, that ye may bring up the ark of Jehovah, the God of Israel, unto the place that I have prepared for it.
1 Chronicles 23:24
These were the sons of Levi after their fathers houses, even the heads of the fathers houses of those of them that were counted, in the number of names by their polls, who did the work for the service of the house of Jehovah, from twenty years old and upward.
1 Chronicles 24:31
These likewise cast lots even as their brethren the sons of Aaron in the presence of David the king, and Zadok, and Ahimelech, and the heads of the fathers houses of the priests and of the Levites; the fathers houses of the chief even as those of his younger brother.

Reubenites

1 Chronicles 12:37
And on the other side of the Jordan, of the Reubenites, and the Gadites, and of the half-tribe of Manasseh, with all manner of instruments of war for the battle, a hundred and twenty thousand.

American Standard Version Public Domain