Matthew 13:31-33 (CSB) The Parables of the Mustard Seed and of the Leaven 31 He presented another parable to them: “The kingdom of heaven is like a mustard seed that a man took and sowed in his field. 32 It’s the smallest of all the seeds, but when grown, it’s taller than the garden plants and becomes a tree, so that the birds of the sky come and nest in its branches.” 33 He told them another parable: “The kingdom of heaven is like leaven[a] that a woman took and mixed into fifty pounds[b] of flour until all of it was leavened.”