Matthew 13:31; Matthew 17:20

Matthew 13:31

31 He presented another parable to them, saying, "The kingdom of heaven is like a mustard seed, which a man took and sowed in his field;

Matthew 17:20

20 And He said to them, "Because of the littleness of your faith; for truly I say to you, 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; and nothing will be impossible to you.