Matthew 13:31–32: He told them another parable: “The kingdom of heaven is like a mustard seed, which a man took and planted in his field. Though it is the smallest of all seeds, yet when it grows, it is the largest of garden plants and becomes a tree, so that the birds come and perch in its branches.

Matthew 17:20: He replied, “Because you have so little faith. Truly I tell you, if you have faith as small as a mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move. Nothing will be impossible for you.”

Mark 4:30: [The Parable of the Mustard Seed] Again he said, “What shall we say the kingdom of God is like, or what parable shall we use to describe it?

Mark 4:31: It is like a mustard seed, which is the smallest of all seeds on earth.

Luke 13:18: [The Parables of the Mustard Seed and the Yeast] Then Jesus asked, “What is the kingdom of God like? What shall I compare it to?

Luke 13:19: It is like a mustard seed, which a man took and planted in his garden. It grew and became a tree, and the birds perched in its branches.”

Luke 17:6: He replied, “If you have faith as small as a mustard seed, you can say to this mulberry tree, ‘Be uprooted and planted in the sea,’ and it will obey you.