King James Version
And this is the cause why Joshua did circumcise: All the people that came out of Egypt, that were males, even all the men of war, died in the wilderness by the way, after they came out of Egypt.English Standard Version
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 in the wilderness on the way after they had come out of Egypt.New International Version
Now this is why he did so: All those who came out of Egypt-all the men of military age-died in the desert on the way after leaving Egypt.