And he did not many mighty works there because of their unbelief.
Straightway the father of the child cried out, and said, I believe; help thou mine unbelief.
And afterward he was manifested unto the eleven themselves as they sat at meat; and he upbraided them with their unbelief and hardness of heart, because they believed not them which had seen him after he was risen.
Then saith he to Thomas, Reach hither thy finger, and see my hands; and reach hither thy hand, and put it into my side: and be not faithless, but believing.
Who in hope believed against hope, to the end that he might become a father of many nations, according to that which had been spoken, So shall thy seed be.
And without being weakened in faith he considered his own body now as good as dead (he being about a hundred years old), and the deadness of Sarah's womb:
yea, looking unto the promise of God, he wavered not through unbelief, but waxed strong through faith, giving glory to God,
and being fully assured that, what he had promised, he was able also to perform.
Wherefore also it was reckoned unto him for righteousness.
And we see that they were not able to enter in because of unbelief.