国度的外表有三项：改变的性质，稗子；改变的外表，表面，大树；以及内在的腐化和腐败，面酵。酵在圣经里象征邪恶的事（林前五6，8）和邪恶的教训(太十六6，11-12）。
教会既是实行的诸天之国，有基督，那无酵的细面为内容，就必是无酵的饼。然而，由这里妇人所象征，那在第六世纪完全且正式形成的罗马天主教，采取了许多异教的作法、异端的道理和邪恶的事物，将其搀到关于基督的教训里，使基督教的全部内容都发了酵。这第四个比喻相当于启示录二、三章里，在推雅推喇的教会。按照历史，推雅推喇表征背道的罗马天主教。
全团指明基督教，已经发了酵，并且腐败了。凡是不属于那灵或基督的，都是酵。酵是加在食物里，使食物容易吃的东西。面包没有酵，就会很硬，很难吃，也很难消化。基督教里的许多东西都是酵，包括圣诞节、复活节、偶像、摇滚乐、戏剧。我们必须谨慎。在建造教会并扩展主的见证上，惟一的路是祷告并传讲纯正的话。在神眼中，任何花招－在基督、神的话、祷告和那灵以外的任何事物－都是酵。
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With the appearance of the kingdom, there are three items: the changed nature, the tares; the changed outward appearance, the façade, the big tree; and the inward rottenness and corruption, the leaven. Leaven in the Scriptures signifies evil things (1 Cor. 5:6, 8) and evil doctrines (Matt. 16:6, 11-12).
The church, as the practical kingdom of the heavens, with Christ — the unleavened fine flour — as its content, must be the unleavened bread. The Catholic Church, which was fully and officially formed in the sixth century and which is signified by the woman in verse 33, took many pagan practices, heretical doctrines, and evil matters and mixed them with the teachings concerning Christ to leaven the whole content of Christianity. This fourth parable corresponds to the fourth of the seven churches in Revelation 2 and 3, the church in Thyatira. According to history, Thyatira signifies the apostate Roman Church.
The whole lump refers to Christianity, which was leavened. Whatever is not of the Spirit or of Christ is leaven. Leaven is something added to make things easy to eat. Without leaven, bread would be hard, and it would be difficult to eat and digest. So many things in Christianity are leaven. These include Christmas, Easter, idols, pictures, images, rock music, drama. We must be careful not to take anything other than Christ. In building up the church and spreading the Lord’s testimony, the only way is to pray and to minister the pure Word. In the eyes of God, any gimmick – anything other than Christ, the Word, prayer and the Spirit – is leaven.