Third and Fourth Parables or Second Pair:
THE MUSTARD SEED and THE LEAVEN (Mt 13:31-33).
The subject of both these parables, as of the first pair, is the same, but under a slight diversity of aspect, namely--
THE GROWTH OF THE KINGDOM FROM THE SMALLEST BEGINNINGS TO ULTIMATE UNIVERSALITY.
The Mustard Seed (Mt 13:31, 32).
31. Another parable put he forth unto them, saying, The kingdom of heaven is like to a grain of mustard seed, which a man took, and sowed in his field;
JFB.
Picture Study Bible