'Mustard seed' in the Bible

Another parable He put before them. "The Kingdom of the Heavens," He said, "is like a mustard-seed, which a man takes and sows in his ground.

"Because your faith is so small," He replied; "for I solemnly declare to you that if you have faith like a mustard-seed, you shall say to this mountain, 'Remove from this place to that,' and it will remove; and nothing shall be impossible to you.

It is like a mustard-seed, which, when sown in the earth, is the smallest of all the seeds in the world;

It is like a grain of mustard seed, which a man took, and cast into his garden; and it grew, and waxed a great tree; and the fowls of the air lodged in the branches of it.

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.