Matthew 17:20
And Jesus said unto them, Because of your unfaithfulness; for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove from here to yonder place, and it shall remove; and nothing shall be impossible unto you.
Luke 17:6
And the Lord said, If ye had faith as a grain of mustard seed, ye might say unto this sycamore tree, Pluck thyself up by the root, and plant thyself in the sea, and it would obey you.
Matthew 13:31
He put forth another parable unto them, saying, The kingdom of the heavens is like unto a grain of mustard seed, which a man took and sowed in his field;
Matthew 21:21
Jesus answered and said unto them, Verily I say unto you, If ye have faith and doubt not, ye shall not only do this to the fig tree, but also if ye shall say unto this mountain, Be thou removed, and be thou cast into the sea, it shall be done.
Mark 11:23
For verily I say unto you that whosoever shall say unto this mountain, Remove thyself and cast thyself into the sea, and shall not doubt in his heart but shall believe that what he says shall be done whatsoever he says shall be done unto him.
1 Corinthians 13:2
And though I have the gift of prophecy and understand all mysteries and all knowledge, and though I have all faith, so that I could remove mountains, and have not charity, I am nothing.
Mark 9:23
And Jesus said unto him, If thou canst believe this, all things are possible to him that believes.
Matthew 14:30-31
But seeing that the wind was strong, he was afraid; and beginning to sink, he cried out, saying, Lord, save me.
Matthew 17:9
And as they came down from the mountain, Jesus charged them, saying, Tell the vision to no one until the Son of man is risen from the dead.
Matthew 17:17
Then Jesus answered and said, O unfaithful and crooked generation, how long shall I be with you? How long shall I suffer you? Bring him here to me.
Mark 4:31
It is like a grain of mustard seed, which, when it is sown in the earth, is less than all the seeds that are in the earth;
Luke 1:37
For with God nothing is impossible.
Luke 18:27
And he said, The things which are impossible with men are possible with God.
John 11:40
Jesus said unto her, Did I not say unto thee that if thou wouldest believe thou shalt see the glory of God?
1 Corinthians 12:9
to another, faith by the same Spirit; to another, gifts of healing by the same Spirit;
Hebrews 3:19
So we see that they could not enter in because of their unbelief.