Joshua 5:4

And this is the reason why Joshua did so: all the males of the people who came out of Egypt, all the fighting-men, had been overtaken by death in the waste land on the way, after they came out of Egypt.

Numbers 26:64-65

But among all these was not one of those numbered by Moses and Aaron the priest when the children of Israel were numbered in the waste land of Sinai.

Deuteronomy 2:16

So when death had overtaken all the men of war among the people,

1 Corinthians 10:5

But with most of them God was not pleased: for they came to their end in the waste land.

Numbers 14:22

Because all these men, having seen my glory and the signs which I have done in Egypt and in the waste land, still have put me to the test ten times, and have not given ear to my voice;

Deuteronomy 2:14

Thirty-eight years had gone by from the time when we came away from Kadesh-barnea till we went over the stream Zered; by that time all the generation of the men of war among us were dead, as the Lord had said.

Hebrews 3:17-19

And with whom was he angry for forty years? was it not with those who did evil, who came to their deaths in the waste land?

Treasury of Scripture Knowledge

Summary

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.

Bible References

All the

Numbers 14:22
Because all these men, having seen my glory and the signs which I have done in Egypt and in the waste land, still have put me to the test ten times, and have not given ear to my voice;
Numbers 26:64
But among all these was not one of those numbered by Moses and Aaron the priest when the children of Israel were numbered in the waste land of Sinai.
Deuteronomy 2:16
So when death had overtaken all the men of war among the people,
1 Corinthians 10:5
But with most of them God was not pleased: for they came to their end in the waste land.
Hebrews 3:17
And with whom was he angry for forty years? was it not with those who did evil, who came to their deaths in the waste land?

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain