'Mustard seed' in the Bible

He gave them another parable: "The kingdom of heaven is like a mustard seed that a man took and sowed in his field.

He told them, "It was because of your little faith. I tell you the truth, if you have faith the size of a mustard seed, you will say to this mountain, 'Move from here to there,' and it will move; nothing will be impossible for you."

It is like a mustard seed that when sown in the ground, even though it is the smallest of all the seeds in the ground --

It is like a mustard seed that a man took and sowed in his garden. It grew and became a tree, and the wild birds nested in its branches."

So the Lord replied, "If you had faith the size of a mustard seed, you could say to this black mulberry tree, 'Be pulled out by the roots and planted in the sea,' and it would obey you.