In the Parable of the Leaven, as presented in Matthew 13:33 and Luke 13:20-21, Jesus Christ forewarns of internal doctrinal distortions that would affect God's church through the centuries until His second coming. Leaven, in this context, symbolizes corruption and evil, reflecting a process of disintegration and decay. Physically, leaven is a substance like yeast or fermented dough that causes bread to rise, but its symbolic use here aligns with negative connotations of corruption. Jesus Christ employs this symbol to indicate the evil doctrines of groups like the Pharisees, Sadducees, and Herod, characterized by hypocrisy, skepticism, and worldly indulgence. Over time, the leaven of distorted doctrine has manifested as greed, pride, control, and worldly desires, subtly striking against the truth within the church. The parable illustrates how leaven is hidden in the meal, representing the secretive and diffusive nature of false doctrine that hinders obedience to the truth. This hidden corruption spreads like leaven through dough, breaking up and corrupting the integrity of God's church. The pervasive influence of such false teachings is a powerful force, not originating from Him who calls us, but from adversarial sources seeking to undermine the progress of the church in history.

The unique offering on the Feast of Weeks (Pentecost) serves as a parable that teaches about the Messiah. The two loaves baked with leaven form the centerpiece of this offering, raising a serious question since Scripture universally uses leaven as a symbol of corruption, yet here it appears in a holy day offering. This living lesson introduces a tension that must be resolved to understand the offering. The mystery deepens with the presence of not one, but two leavened loaves, prompting curiosity about the significance of the number two. The priest bakes these wave loaves with leaven, symbolically suggesting that the difference between the two may not be benign, as differences with carnality tend to produce division, if not enmity. This picture presents a puzzle of how God could accept an offering of loaves characterized by corruption.