Matthew 17:20
And Jesus said to them, Because of your unbelief: for verily I say to you, If ye have faith as a grain of mustard-seed, ye shall say to this mountain, Remove hence to yonder place, and it shall remove; and nothing shall be impossible to you.
Luke 17:6
And the Lord said, If ye had faith as a grain of mustard-seed, ye might say to this sycamine-tree, Be thou plucked up by the root, and be thou planted in the sea; and it would obey you.
Matthew 13:31
Another parable he proposed to them, saying, The kingdom of heaven is like a grain of mustard-seed, which a man took, and sowed in his field:
Matthew 21:21
Jesus answered and said to them, Verily I say to you, If ye have faith, and doubt not, ye shall not only do this which is done to the fig-tree, but also, if ye shall say to this mountain, Be thou removed, and be thou cast into the sea; it shall be done.
Mark 11:23
For verily I say to you, that whoever shall say to this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that the things which he saith shall come to pass; he shall have whatever he saith.
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
Jesus said to him, If thou canst believe, all things are possible to him that believeth.
Matthew 14:30-31
But when he saw the wind boisterous, he was afraid; and beginning to sink, he cried, saying, Lord, save me.
Matthew 17:9
And as they were descending the mountain, Jesus charged them, saying, Tell the vision to no man, until the Son of man be raised again from the dead.
Matthew 17:17
Then Jesus answered and said, O faithless and perverse generation, how long shall I be with you? how long shall I suffer you? bring him hither 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 will be impossible.
Luke 18:27
Then he said, The things which are impossible with men, are possible with God.
John 11:40
Jesus saith to her, Said I not to thee, that if thou wouldest believe, thou shouldest see the glory of God?
1 Corinthians 12:9
To another, faith by the same Spirit; to another, the gifts of healing by the same Spirit;
Hebrews 3:19
So we see that they could not enter in because of unbelief.