Joshua 5:5-7

5The men who left Egypt had been circumcised. However, the men born later, on the way through the desert, were not circumcised.

6For 40 years the Israelites wandered through the desert until all their soldiers who left Egypt died. They died because they disobeyed the Lord. The Lord swore that he would not let them see this land flowing with milk and honey which he had sworn to give our ancestors.

7The sons who took their place had not been circumcised on the way. So Joshua circumcised them.