Joshua 5:1-3

When all the Amorite kings west of the Jordan and all the Canaanite kings who lived along the Mediterranean coast heard how the LORD had dried up the Jordan River so the people of Israel could cross, they lost heart and were paralyzed with fear because of them. At that time the LORD told Joshua, “Make flint knives and circumcise this second generation of Israelites.” So Joshua made flint knives and circumcised the entire male population of Israel at Gibeath-haaraloth.