'Mustard seed' in the Bible

Another parable He set before them, saying, "The Kingdom of Heaven is like a grain of mustard seed, which a man, having taken, sowed in his field:

And He saith to them, "Because of your little faith. For verily I say to you, if ye have faith as a grain of mustard seed, ye shall say to this mountain, 'Remove hence yonder,' and it will be removed, and nothing shall be impossible to you."

It is like a grain of mustard seed, which a man, taking, cast into his own garden; and it grew, and became a tree; and the birds of the heaven lodged in its branches."

And the Lord said, "If ye have faith as a grain of mustard seed, ye would say to this sycamine tree, 'Be rooted up, and be planted in the sea,' and it would obey you.