For we have become partners of Christ, if only we hold our first confidence firm to the end.
As it is said, "Today, if you hear his voice, do not harden your hearts as in the rebellion."
Now who were they who heard and yet were rebellious? Was it not all those who left Egypt under the leadership of Moses?
But with whom was he angry forty years? Was it not those who sinned, whose bodies fell in the wilderness?
And to whom did he swear that they would not enter his rest, if not to those who were disobedient?
So we see that they were unable to enter because of unbelief.