1 Corinthians 10:5

But in most of them God was not well pleased, for they were laid low in the desert.

Hebrews 3:17-19

And with whom was he grieved for forty years? Was it not with those who had sinned, and whose dead bodies fell in the wilderness?

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

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1 Corinthians 10:5
But in most of them God was not well pleased, for they were laid low in the desert.
Hebrews 3:17
And with whom was he grieved for forty years? Was it not with those who had sinned, and whose dead bodies fell in the wilderness?