Luke 17:6

And the Lord said, If ye had faith as a grain of mustard, ye might say to that sycamore-tree, Be rooted up, and be planted in the sea; and it would obey you.

Matthew 17:20

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

Matthew 21:21

But Jesus addressing them, said, Verily I tell you, if ye have faith, and entertain no doubt, not only shall ye do what is done to the fig-tree, but if ye should even say to this mountain, Be lifted up, and be cast into the sea, it be done.

Mark 9:23

Then said Jesus unto him, This [is the point]: if thou canst believe, all things are possible to him that believeth.

Luke 13:19

It is like a grain of mustard, which a man took and put into his garden; and it grew, and became a great tree; and the fowls of the air lodged on its branches.

Matthew 13:31-32

Another parable he proposed 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 said to them, Have faith in God.

Luke 19:4

So running before, he climbed up a sycamore-tree, in order to get a sight of him: for he was about to pass that way.

1 Corinthians 13:2

And though I have the gift of prophecy, and know all mysteries, and all manner of science; and though I have all faith, so that I could remove mountains, but 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
Then said Jesus unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard, ye shall say to this mountain, Remove from hence, thither, and it will remove; and nothing will be impossible for you.
Matthew 21:21
But Jesus addressing them, said, Verily I tell you, if ye have faith, and entertain no doubt, not only shall ye do what is done to the fig-tree, but if ye should even say to this mountain, Be lifted up, and be cast into the sea, it be done.
Mark 9:23
Then said Jesus unto him, This [is the point]: if thou canst believe, all things are possible to him that believeth.
Mark 11:22
And Jesus answering said to them, Have faith in God.
1 Corinthians 13:2
And though I have the gift of prophecy, and know all mysteries, and all manner of science; and though I have all faith, so that I could remove mountains, but have not love, I am nothing.

As

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