What does Judges 3:28 mean?
Ehud has gathered an army from the men of the tribe of Ephraim. After killing the king of Moab in the royal palace (Judges 3:19–23), Ehud is leading Israelite fighters into battle to defeat the Moabites and free the nation from their oppressive rule (Judges 3:12–14).Before the battle, Ehud gives a speech that makes it clear that the ultimate victory will be won by the Lord. He declares confidence in their success because God Himself will provide victory.
The military strategy at work here is simple: Ehud and his men take control of the crossing points of the Jordan River near the Dead Sea. These are the locations where soldiers and other land traffic would have been able to cross back and forth over the Jordan. Once the Israelites had possession of these "fords," they could keep any Moabite soldiers in Israel from escaping. They can also prevent reinforcements from crossing over the Jordan into Israel. Both will be crucial in preventing Moab from launching any revenge attacks.