For the LORD had said of them, They shall surely die in the wilderness. And there was not left a man of them, save Caleb the son of Jephunneh, and Joshua the son of Nun.

Your fathers, where are they? and the prophets, do they live for ever?

And did all eat the same spiritual meat;

But with many of them God was not well pleased: for they were overthrown in the wilderness.

But with whom was he grieved forty years? was it not with them that had sinned, whose carcases fell in the wilderness?

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

I will therefore put you in remembrance, though ye once knew this, how that the Lord, having saved the people out of the land of Egypt, afterward destroyed them that believed not.