Matthew 17:20

And, he, saith unto them - Because of your little faith. For, verily, I say unto you - If ye have faith as a grain of mustard seed, ye shall say to this mountain, remove hence yonder; and it shall be removed, and, nothing, shall be impossible to you.

Luke 17:6

And the Lord said - If ye have faith like a grain of mustard-seed, ye should be saying unto thismulberry-tree - Be uprooted! and be planted in the sea, - and it should obey you.

Matthew 13:31

Another parable, put he before 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

And Jesus, answering, said unto them - Verily, I say unto you, If ye have faith, and do not doubt, not only, this of the fig-tree, shall ye do, - but, even if, unto this mountain, ye shall say, Be lifted up, and be cast into the sea, it shall be done.

Mark 11:23

Verily, I say unto you - Whosoever shall say unto this mountain, Be lifted up, and cast into the sea, and shall not doubt in his heart but shall believe that, what he speaketh, cometh to pass, it shall be his.

1 Corinthians 13:2

And, though I have the gift of prophesying, and know all sacred secrets, and all knowledge, - and though I have all faith, so as to be removing mountains, and have not, love, I am, nothing;

Mark 9:23

And, Jesus, said unto him - As for this, If it be possible to thee, all things, are possible, to him who hath faith.

Matthew 14:30-31

But, seeing the wind, he was affrighted, and, beginning to sink, cried out, saying - Lord! save me!

Matthew 17:9

And, as they were coming down out of the mountain, Jesus commanded them, saying - Unto no one, may ye tell the vision, until the Son of Man, from among the dead shall arise.

Matthew 17:17

And Jesus, answering, said - O faithless and perverted generation! How long shall I be with you? How long shall I bear with you? Bring him to me, here.

Mark 4:31

As a grain of mustard seed, - which, whensoever it may be sown upon the earth, is less than all the seeds that are upon the earth;

Luke 1:37

Because no declaration from God, shall be void of power.

Luke 18:27

And, he, said - The things impossible with men, are, possible with God.

John 11:40

Jesus saith unto her - Said I not unto thee, that, if thou wouldst believe, thou shouldst see the glory of God?

1 Corinthians 12:9

Unto a different one, faith, in the same Spirit, and, unto another, gifts of healings, in the one Spirit,

Hebrews 3:19

And we see, that they were not able to enter, because of unbelief.

Treasury of Scripture Knowledge

Summary

And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.

Bible References

Because

Matthew 17:17
And Jesus, answering, said - O faithless and perverted generation! How long shall I be with you? How long shall I bear with you? Bring him to me, here.
Matthew 14:30
But, seeing the wind, he was affrighted, and, beginning to sink, cried out, saying - Lord! save me!
Hebrews 3:19
And we see, that they were not able to enter, because of unbelief.

A grain

Matthew 13:31
Another parable, put he before them, saying - The kingdom of the heavens is like unto, a grain of mustard seed, which a man took and sowed in his field;
Mark 4:31
As a grain of mustard seed, - which, whensoever it may be sown upon the earth, is less than all the seeds that are upon the earth;

Nothing

Mark 9:23
And, Jesus, said unto him - As for this, If it be possible to thee, all things, are possible, to him who hath faith.
Luke 1:37
Because no declaration from God, shall be void of power.
Luke 18:27
And, he, said - The things impossible with men, are, possible with God.