Joshua 5:4

Now this is the reason for the second circumcision: All the people who departed from Egypt of the male gender, all the men fit for war, died in the desert during the very long wandering way

Other versions

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.