Luke 17:6

But the Lord said, If ye had faith as a grain of mustard, ye might say to this sycaminetree, Be plucked up by the roots, and planted in the sea! and it would obey you.

Matthew 17:20

And he said to them, Because of your want of faith. For truly do I say to you, If ye have faith as a grain of mustard, ye shall say to this mountain, Remove hence to yonder place, and it will remove; and nothing will be impossible to you.

Matthew 21:21

Jesus answering said to them, Truly do I say to you, If ye have faith, and do not doubt, not only shall ye do what hath been done to the figtree, but should ye even say to this mountain, Be thou taken up and cast into the sea, it would be done.

Mark 9:23

Jesus said to him, If thou art able? All things are possible for him that believeth.

Luke 13:19

It is like a grain of mustard, which a man took, and cast into his garden; and it grew, and became a tree, and the birds of the air lodged in its branches.

Matthew 13:31-32

Another parable he put forth to them, saying, The kingdom of heaven is like a grain of mustard, which a man took and sowed in his field.

Mark 11:22-23

And Jesus answering saith to them, Have faith in God.

Luke 19:4

And he ran on before, and climbed up a sycamoretree to see him; for he was to pass that way.

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 as to remove mountains, and have not love, I am nothing.

Treasury of Scripture Knowledge

Summary

And the Lord said, If ye had faith as a grain of mustard seed, ye might say unto this sycamine tree, Be thou plucked up by the root, and be thou planted in the sea; and it should obey you.

Bible References

If

Matthew 17:20
And he said to them, Because of your want of faith. For truly do I say to you, If ye have faith as a grain of mustard, ye shall say to this mountain, Remove hence to yonder place, and it will remove; and nothing will be impossible to you.
Matthew 21:21
Jesus answering said to them, Truly do I say to you, If ye have faith, and do not doubt, not only shall ye do what hath been done to the figtree, but should ye even say to this mountain, Be thou taken up and cast into the sea, it would be done.
Mark 9:23
Jesus said to him, If thou art able? All things are possible for him that believeth.
Mark 11:22
And Jesus answering saith to them, Have faith in God.
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 as to remove mountains, and have not love, I am nothing.

As

Luke 13:19
It is like a grain of mustard, which a man took, and cast into his garden; and it grew, and became a tree, and the birds of the air lodged in its branches.
Matthew 13:31
Another parable he put forth to them, saying, The kingdom of heaven is like a grain of mustard, which a man took and sowed in his field.