Matthew 17:17
Jesus answered and said, O unbelieving and perverse generation! How long shall I be with you? How long shall I suffer you? Bring him here to me.
Matthew 17:20
And Jesus said to them, On account of your unbelief. For I tell you truly, if you have a faith like a mustard seed, you shall say to this mountain, Be removed thence to that place, and it shall be removed; and nothing shall be impossible to you.
Luke 1:20
And behold you shall be silent, and not able to speak, till the day these things are accomplished; because you have not believed my words, which shall be fulfilled in their time.
Luke 1:45
And blessed is she that believed; for there shall be an accomplishment of the words spoken to her by the Lord.
John 1:17
for the law was given by Moses, the grace and truth were by Jesus Christ.
Romans 4:20
and he did not doubt the promise of God by unbelief, but was strong in faith, giving glory to God,
1 Peter 3:15
and sanctify the anointed Lord in your hearts, and be always ready with a defense to every one that asks you a reason for the hope that is in you; but with meekness and fear,