He said to them, Follow after me; for Yahweh has delivered your enemies the Moabites into your hand. They went down after him, and took the fords of the Jordan against the Moabites, and didn't allow a man to pass over.
The Moabites who at this time were living west of the Jordan River would have fled back home eastward to their native country. For this reason the Israelites seized the fording place (Judges 3:28).