Richard Ritenbaugh, citing Francis Shaeffer's observation, that bitterness rather than doctrine divides and estranges one member from of Christ's Body from another, suggests that individuals often look for a 'doctrinal' reason to cover up the real reason for leaving a congregation. Perhaps the principal cause of the estrangement between brethren can be explained by the Parable of the Leaven in Matthew 13:33, an image of a process of exaggerated growth, parallel to the mustard see analogy, in which a garden plant unnaturally grows into an imposing tree. Although many Bible Commentaries have assumed that both of these similes simply mean what started small will grow to something large, they fail to take into account the necessity of symbols remaining consistent beginning with the first mention in scripture. Leaven symbolizes corruption from sin, even as we examine the wave loaves, composed of humans laden from sin (from which they have repented). As ambassadors for Christ, already having our citizenship in Heaven, we still have sin in our nature. Interestingly, the grain offering in Leviticus 3, designated for the peace offering or fellowship offering did not contain leaven. As a biblical symbol, leaven stands for hypocrisy, false teachings, sexual immorality, vile corruption, malice and wickedness, a condition which will not exist in God's Kingdom, but is rampant in the Church of God today as it syncretizes doctrine with 'knowledge' derived from the Babylonic worldly philosophies. The woman sneaking in the leaven with three measures of meal in Matthew 13 evidently represents the Church, who surreptitiously mixed Christ's pure doctrine with a little sourdough of worldly wisdom, puffing up the church with intellectual vanity, but destroying the prospects of unity or reconciliation between the numerous splinter groups. With this leavening, Satan has destroyed the relationship between church members by corrupting the doctrines that had bound us together.
While the Parable of the Hidden Treasure is similar to the Parable of the Pearl of Great Price, their meanings are different. Martin Collins dissects the symbols to reveal the high value God places on His people.
Most commentators see in the Parable of the Leaven a positive message of the growth of the church. Martin Collins, however, shows that they have it exactly backward—Jesus' parable is a warning of internal corruption!
Richard Ritenbaugh reiterates that the Kingdom of God or of Heaven has past (Hebrews 11:13), present (Hebrews 12:22), and future (Hebrews 12:28) aspects. The Kingdom parables primarily provide instruction for the present aspect, a time when struggle and suffering are part of the mix (Matthew 11:12). The first parables of Matthew 13 reveal Satan's battle plan to: (1) attack in the early stages of development, (2) infiltrate with secret agents, (3) cause the church to grow large and worldly, exceeding God's prescribed limits, and (4) corrupt by false doctrine, destroying the relationships between the brethren. These parables describe the last quarter century in the church of God.