John Wesley on 2 Samuel 3:19

Benjamin - To these he particularly applies himself, because they might be thought most kind to Saul and his house, and most loath to let the kingdom go out of their own tribe; and therefore it was necessary that he should use all his art and power with them, to persuade them to a compliance with his design; and besides, they were a valiant tribe, and bordering upon Judah, and situate between them and the other tribes; and therefore the winning of them, would be of mighty concernment to bring in all the rest.