The children of Israel went up and wept before Yahweh until even; and they asked of Yahweh, saying, Shall I again draw near to battle against the children of Benjamin my brother? Yahweh said, Go up against him.
and the Lord said, go up against him; for Benjamin was certainly in the wrong, and therefore the Israelites are directed to go against him, and they also were not sufficiently chastised, nor thoroughly humbled.