Matthew 17:20
and Jesus says to them, On account of your unbelief. For truly I say unto you, If you have faith as a grain of mustard seed, you will 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 you have faith as a grain of mustard seed. you should say to this sycamine tree, Be thou plucked up, and planted in the sea; and it would obey you.
Matthew 13:31
And He submitted another parable to them, saying; The kingdom of the heavens is like unto a grain of mustard seed, which, a man having taken, sowed in his field;
Matthew 21:21
And Jesus responding said to them, Truly I say unto you, if you may have faith, and doubt not, not only shall you do that of the fig-tree, but you shall say to this mountain, Be thou taken up and cast into the sea, and it will be done.
Mark 11:23
Truly I say unto you, That whosoever may say to this mountain, Be thou taken up and cast into the sea; and may not doubt in his heart, but believe that what he says does take place; it shall be unto him.
1 Corinthians 13:2
And if I have the gift of prophecy, and understand all mysteries, and all knowledge; and if I have all faith, so as to remove mountains, and have not divine love, I am nothing.
Mark 9:23
And Jesus said to him, It is this, if you are able (to believe); all things are possible to him that believeth.
Matthew 14:30-31
And seeing the wind strong, became alarmed; and beginning to sink, he cried out, saying, Lord, save me.
Matthew 17:9
And they coming down from the mountain, Jesus charged them, saying, Tell the vision to no one, until the Son of man may rise from the dead.
Matthew 17:17
And Jesus responding said: O, faithless and perverse generation, how long shall I be with you? bring him hither to me.
Mark 4:31
Tis like a grain of mustard seed, which when it may be sown upon the earth, is the smallest of all seeds which are upon the earth,
Luke 1:37
Because no word shall be impossible with God.
Luke 18:27
And He said, Those things which are impossible with men are possible with God.
John 11:40
Jesus says to her; Did I not tell thee, that, if thou canst believe, thou shalt see the glory of God?
Hebrews 3:19
And we see that they were not able to enter in on account of their unbelief.