TSK · Judges 20:12

then you shall inquire, and make search, and ask diligently; and, behold, if it be truth, and the thing certain, that such abomination is done in the midst of you,

The children of Israel sent to the children of Reuben, and to the children of Gad, and to the half-tribe of Manasseh, into the land of Gilead, Phinehas the son of Eleazar the priest,

"If your brother sins against you, go, show him his fault between you and him alone. If he listens to you, you have gained back your brother.