Luke 13:12
Again he asked, What shall I compare the kingdom of God to? It is like yeast that a woman took and mixed into about sixty pounds of flour until it worked all through the dough — the yeast parable complements the mustard seed: outward expansion paired with inward transformation. Both parables resist the dramatically visible arrival expected by the crowd and describe the kingdom as working through ordinary means — a seed, a leavening — until the result exceeds all proportion.