They took them wives according to their number That is, each man took his wife. By which we may see, they had no very favourable opinion of polygamy, because they did not allow it in this case, when it might seem most necessary for the reparation of a lost tribe. And repaired the cities By degrees, increasing their buildings as their number increased.
Related Commentaries of Judges 21:23
Judges 21:23
23 And the children of Benjamin did so, and took them wives, according to their number, of them that danced, whom they caught: and they went and returned unto their inheritance, and repaired the cities, and dwelt in them.