And the children of Israel went up and wept before Yahweh until evening, and they inquired of Yahweh, saying, “Should I again draw near to battle against the children of Benjamin my brother?”

And Yahweh said, “Go up against him.” Bible

“Should I.” Israel considers itself as one.

“Go up against him.” The Hebrew is singular, “him,” a collective singular for the tribe of Benjamin.

Commentary for: Judges 20:23