Matthew 17:20

He said to them, "Because you have so little faith. I tell you truly, if you had faith the size of a grain of mustard-seed, you could say to this hill, 'Move from here to there,' and remove it would; nothing would be impossible for you."

Luke 17:6

The Lord said, "If you had faith the size of a grain of mustard-seed, you would say to this mulberry tree, 'Be uprooted and planted in the sea,' and it would obey you.

Matthew 13:31

He put another parable before them. "The Realm of heaven," he said, "is like a grain of mustard-seed which a man takes and sows in his field.

Matthew 21:21

Jesus answered, "I tell you truly, if you have faith, if you have no doubt, you will not only do what has been done to the fig tree but even if you say to this hill, 'Take and throw yourself into the sea,' it will be done.

Mark 11:23

I tell you truly, whoever says to this hill, 'Take and throw yourself into the sea,' and has not a doubt in his mind but believes that what he says will happen, he will have it done.

1 Corinthians 13:2

I may prophesy, fathom all mysteries and secret lore, I may have such absolute faith that I can move hills from their place, but if I have no love, I count for nothing;

Mark 9:23

Jesus said to him, "'If you can'! Anything can be done for one who believes."

Matthew 14:30-31

but when he saw the strength of the wind he was afraid and began to sink. "Lord," he shouted, "save me."

Matthew 17:9

As they went down the hill Jesus ordered them, "Tell this vision to nobody until the Son of man is raised from the dead."

Matthew 17:17

Jesus answered, "O faithless and perverse generation, how long must I still be with you? How long have I to bear with you? Bring him here to me."

Mark 4:31

It is like a grain of mustard-seed ??less than any seed on earth when it is sown on earth;

Luke 1:37

for with God nothing is ever impossible."

Luke 18:27

He said, "What is impossible for men is possible for God."

John 11:40

"Did I not tell you," said Jesus, "if you will only believe, you shall see the glory of God?"

1 Corinthians 12:9

one man in the same Spirit has the gift of faith, another in the one Spirit has gifts of healing;

Hebrews 3:19

Thus we see it was owing to unbelief that they could not enter.

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
Jesus answered, "O faithless and perverse generation, how long must I still be with you? How long have I to bear with you? Bring him here to me."
Matthew 14:30
but when he saw the strength of the wind he was afraid and began to sink. "Lord," he shouted, "save me."
Hebrews 3:19
Thus we see it was owing to unbelief that they could not enter.

A grain

Matthew 13:31
He put another parable before them. "The Realm of heaven," he said, "is like a grain of mustard-seed which a man takes and sows in his field.
Mark 4:31
It is like a grain of mustard-seed ??less than any seed on earth when it is sown on earth;

Nothing

Mark 9:23
Jesus said to him, "'If you can'! Anything can be done for one who believes."
Luke 1:37
for with God nothing is ever impossible."
Luke 18:27
He said, "What is impossible for men is possible for God."