Why we refute the provisional teachings in the Latter Day

"When one must face enemies, one needs a sword, a stick, or a bow and arrows. When one has no enemies, however, such weapons are of no use at all. In this age, the provisional teachings have turned into enemies of the true teaching. When the time is right to propagate the teaching of the one vehicle, the provisional teachings become enemies. When they are a source of confusion, they must be thoroughly refuted from the standpoint of the true teaching. Of the two types of practice, this is shakubuku, the practice of the Lotus Sutra. With good reason T’ien-t’ai stated, “The Lotus Sutra is the teaching of shakubuku, the refutation of the provisional doctrines.”