1 Corinthians 10:5

but with most of them God was not well pleased; for they were laid low in the wilderness.

1 Corinthians 10:11

Now these things happened to them as warnings, and were recorded for our admonition, to whom the ends of the ages have come.

Hebrews 3:19

So then we see that they could not enter in because of unbelief.

Treasury of Scripture Knowledge

Summary

I the LORD have said, I will surely do it unto all this evil congregation, that are gathered together against me: in this wilderness they shall be consumed, and there they shall die.

Bible References

This evil

1 Corinthians 10:5
but with most of them God was not well pleased; for they were laid low in the wilderness.
Hebrews 3:19
So then we see that they could not enter in because of unbelief.