Matthew 13:31-33

31He put before them another parable: “The kingdom of heaven is like a mustard seed that a man took and planted in his field. 32Although it is the smallest of all seeds, yet it grows into the largest of garden plants and becomes a tree, so that the birds of the air come and nest in its branches.”

33He told them still another parable: “The kingdom of heaven is like leaven that a woman took and mixed into three measures of flour, until all of it was leavened.”