Judges 21:17

“And they said, there must be an inheritance for them that be escaped Benjamin, etc.] The escaped are the six hundred men in the rock Rimmon; four hundred of them were supplied with wives, the other two wanted; and as there was an inheritance divided by lot to the tribe of Benjamin, to that tribe and to that only it belonged, and they must have it and no other; it now of right devolved on these six hundred men, and them only, and therefore provision must be made to increase their number, that they may occupy the inheritance they have a right to, rebuild their cities, till their land, cultivate their vineyards and oliveyards, and enjoy all the advantages of their possessions: that a tribe be…”

“There must be an inheritance for them that be escaped of Benjamin--As they were the only rightful owners of the territory, provision must be made for transmitting it to their legitimate heirs, and a new act of violence was meditated (Jdg 21:19); the opportunity for which was afforded by the approaching festival--a feast generally supposed to be the feast of tabernacles. This, like the other annual feasts, was held in Shiloh, and its celebration was attended with more social hilarity and holiday rejoicings than the other feasts.”

“An inheritance - The inheritance promised by Jacob and Moses, and given by Joshua to the tribe of Benjamin, doth all of it belong to those few who remain of that tribe, and cannot be possessed by any other tribe; and therefore we are obliged to procure wives for them all, that they may make up this breach, and be capable of possessing and managing all their land: that this tribe, and their inheritance may not be confounded with, or swallowed up by any of the rest. Judges 21:19”

“an inheritance: Num 26:55, Num 36:7 Judges 21:18”

“Still Benjamin must be preserved as a tribe. The elders therefore said, "Possession of the saved shall be for Benjamin," i.e., the tribe-land of Benjamin shall remain an independent possession for the Benjaminites who have escaped the massacre, so that a tribe may not be destroyed out of Israel. It was necessary therefore, that they should take steps to help the remaining Benjaminites to wives. The other tribes could not give them their daughters, on account of the oath which has already been mentioned in Jdg 21:1 and Jdg 21:7 and is repeated here ( Jdg 21:18). Consequently there was hardly any other course open, than to let the Benjaminites seize upon wives for themselves. And the elders…”