When all the kings of the Amorites that were beyond the Jordan to the west, and all the kings of the Canaanites that were by the sea, heard that the LORD had dried up the waters of the Jordan for the people of Israel until they had crossed over, their heart melted, and there was no longer any spirit in them, because of the people of Israel.
At that time the LORD said to Joshua, "Make flint knives and circumcise the people of Israel again the second time."
So Joshua made flint knives, and circumcised the people of Israel at Gibeath-haaraloth.
And this is the reason why Joshua circumcised them: all the males of the people who came out of Egypt, all the men of war, had died on the way in the wilderness after they had come out of Egypt.
Though all the people who came out had been circumcised, yet all the people that were born on the way in the wilderness after they had come out of Egypt had not been circumcised.
For the people of Israel walked forty years in the wilderness, till all the nation, the men of war that came forth out of Egypt, perished, because they did not hearken to the voice of the LORD; to them the LORD swore that he would not let them see the land which the LORD had sworn to their fathers to give us, a land flowing with milk and honey.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (Revised Standard Version - Holy Bible)