Joshua 5:4-9

This is the reason why Joshua circumcised them: all the people who came out of Egypt who were males, all the men of war, had died in the wilderness along the way after they left Egypt. All the males who came out were circumcised, but all the males who were born in the wilderness on the way as they left Egypt had not been circumcised. For the Israelites walked forty years in the wilderness, until all the nation, that is, the men of war who came out of Egypt, died because they did not listen to the voice of the LORD; to them the LORD had sworn [an oath] that He would not let them see the land which He had promised to their fathers to give us, a land [of abundance] flowing with milk and honey. So it was their uncircumcised sons whom He raised up in their place, whom Joshua circumcised, because circumcision had not been performed on the way. Then, when they had finished circumcising all [the males of] the nation, they stayed in their places in the camp until they were healed. Then the LORD said to Joshua, “This day I have rolled away the reproach (derision, ridicule) of Egypt from you.” So the name of that place is called Gilgal (rolling) to this day.