'Mustard seed' in the Bible

He put another parable before them. "The Realm of heaven," he said, "is like a grain of mustard-seed which a man takes and sows in his field.

He said to them, "Because you have so little faith. I tell you truly, if you had faith the size of a grain of mustard-seed, you could say to this hill, 'Move from here to there,' and remove it would; nothing would be impossible for you."

It is like a grain of mustard-seed ??less than any seed on earth when it is sown on earth;

It is like a grain of mustard-seed which a man took and put into his orchard, where it grew up and became a tree, and the wild birds roosted in its branches."

The Lord said, "If you had faith the size of a grain of mustard-seed, you would say to this mulberry tree, 'Be uprooted and planted in the sea,' and it would obey you.