Numbers 14:35

I, Yahweh, have spoken; I will surely do this to all this evil community who has banded together against me. In this desert they will come to an end, and there they will die."

Numbers 23:19

God [is] not a man, that he should lie, nor a son of humankind, that he should change his mind. Has he said, and will he not do [it]? And has he spoken, and will he not fulfill it

Numbers 14:27-29

"How long [will I bear] this evil community who are grumbling against me? I have heard the grumbling of the {Israelites} which {they are making} against me.

Numbers 26:65

For Yahweh said to them, "They will surely die in the desert." And not a man was left over from them, except Caleb son of Jephunneh and Joshua son of Nun.

1 Corinthians 10:5

But God was not pleased with the majority of them, for they were struck down in the desert.

1 Corinthians 10:11

Now these [things] happened to those [people] as an example, but are written for our instruction, on whom the ends of the ages have come.

Hebrews 3:19

And [so] we see that they were not able to enter 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

Numbers 14:27
"How long [will I bear] this evil community who are grumbling against me? I have heard the grumbling of the {Israelites} which {they are making} against me.
Numbers 26:65
For Yahweh said to them, "They will surely die in the desert." And not a man was left over from them, except Caleb son of Jephunneh and Joshua son of Nun.
1 Corinthians 10:5
But God was not pleased with the majority of them, for they were struck down in the desert.
Hebrews 3:19
And [so] we see that they were not able to enter because of unbelief.