Note Note 7 — CHAPTER 19.
Reading edition
7. The Symbolism of Leaven.—In the parable, the kingdom of heaven is likened unto leaven. In other scriptures, leaven is figuratively mentioned as representing evil, thus, "the leaven of the Pharisees and of the Sadducees" (Matt. 16:6, see also Luke 12:1), "the leaven of Herod" (Mark 8:15). These instances, and others (1 Cor. 5:7, 8) are illustrative of the contagion of evil. In the incident of the woman using leaven in the ordinary process of bread-making, the spreading, penetrating vital effect of truth is symbolized by the leaven. The same thing in different aspects may very properly be used to represent good in one instance and evil in another.