Numbers 14:35
I Jehovah have spoken; I will surely do it to all this evil congregation who are gathered together against Me. They shall be destroyed in this wilderness, and there they shall die.
Numbers 23:19
God is not a man that He should lie, neither the son of man that He should repent. Has He said, and shall He not do it? Or has He spoken, and shall He not make it good?
Numbers 14:27-29
How long shall I bear with this evil congregation, which murmurs against Me? I have heard the murmurings of the sons of Israel which they murmur against Me.
Numbers 26:65
For Jehovah had said of them, They shall surely die in the wilderness. And there was not a man left of them, except Caleb the son of Jephunneh and Joshua the son of Nun.
1 Corinthians 10:5
But with many of them God was not well pleased, for they were scattered in the wilderness.
1 Corinthians 10:11
And all these things happened to them as examples; and it is written for our warning on whom the ends of the world have come.
Hebrews 3:19
So we see that they could not enter in because of unbelief.