C. F. Keil and Franz Delitzsch on Judges 19:22

Jdg 19:22

Whilst they were enjoying themselves, some worthless men of the city surrounded the house, knocking continuously at the door (התדּפּק, a form indicative of gradual increase), and demanding of the master of the house that he would bring out the man who had entered his house, that they might know him,-the very same demand that the Sodomites had made of Lot (Gen 19:6.). The construct state בני־בליּעל אנשׁי is used instead of בּני־בל אנשׁים (Deu 13:14, etc.), because בליעל בני is regarded as one idea: people of worthless fellows. Other cases of the same kind are given by Ewald, Lehrb. §289, c.