'Circumcised' in the Bible

At that time the LORD told Joshua, "Make for yourselves some flint knives and circumcise the Israelis who haven't been circumcised yet."

So Joshua made some flint knives and circumcised the Israelis at Gibeath-haaraloth.

Joshua circumcised them because all of the males among the people who came out of Egypt that is, all the warriors had died during their journey through the wilderness following their departure from Egypt.

Although everyone who had left Egypt had been circumcised, nevertheless all the people born during the journey after their departure from Egypt had not been circumcised.

As a result, it was their descendants, whom he raised up to take their place, that Joshua circumcised. They had remained uncircumcised, because they had not been circumcised during their journey.