58 And he did not many mighty works there because of their unbelief.
And he marvelled because of their unbelief. And he went round about the villages, teaching.
24 And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.
14 ¶ Afterward he appeared unto the eleven as they sat at meat, and upbraided them with their unbelief and hardness of heart, because they believed not them which had seen him after he was risen.
For what if some did not believe? shall their unbelief make the faith of God without effect?
20 He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God;
20 Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:
… 
23 And they also, if they abide not still in unbelief, shall be graffed in: for God is able to graff them in again.
11 Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.