Bible Verses About The Anger of God: Against: Unbelief

Therefore the LORD heard this, and was wroth: so a fire was kindled against Jacob, and anger also came up against Israel;

Because they believed not in God, and trusted not in his salvation:

He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.

And to whom sware he that they should not enter into his rest, but to them that believed not?

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