The Leaven
Quiet influence that permeates the whole.
Jesus likens the kingdom to leaven working through dough: unseen, comprehensive transformation.
Scripture
Matthew 13:33
33 He spoke another parable to them. "The Kingdom of Heaven is like yeast, which a woman took, and hid in three measures of meal, until it was all leavened."
Luke 13:20-21
20 Again he said, "To what shall I compare the Kingdom of God?
21 It is like yeast, which a woman took and hid in three measures of flour, until it was all leavened."