'Mustard seed' in the Bible

Another parable, put he before them, saying - The kingdom of the heavens is like unto, a grain of mustard seed, which a man took and sowed in his field;

And, he, saith unto them - Because of your little faith. For, verily, I say unto you - If ye have faith as a grain of mustard seed, ye shall say to this mountain, remove hence yonder; and it shall be removed, and, nothing, shall be impossible to you.