'Mustard seed' in the Bible

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

So he said to them, "Because of your little faith. For truly, I say to you, if you have faith as a grain of mustard seed, you will say to this mountain, 'Move from here to there,' and it will move; and nothing will be impossible to you."

It is like a mustard seed which, when it is sown on the ground, is the smallest of all seeds in the earth;

It is like a mustard seed, which a man took and sowed in his garden; and it grew and became a tree, and the birds of the air nested in its branches."

So the Lord said, "If you have faith as a mustard seed, you can say to this mulberry tree, 'Be uprooted and be planted in the sea,' and it would obey you.