QUESTION: If the Buddha preached the Lotus Sūtra not at the beginning but after four decades of preaching lest the people might slander the sūtra, why do you suddenly expound the Lotus Sūtra without preaching the provisional sūtras first, causing the people to slander the True Dharma and fall into the evil realms?
ANSWER: While in this world the Buddha sat under the bodhi tree contemplating the capacity of the people. He foresaw that preaching the Lotus Sūtra then would cause the people to slander it and fall into the evil realms, but preaching it 40 years or so later would not cause them to slander it; instead, it would cause them to enter the way of bodhisattvas attaining the rank of shojü (state of non-regression) or even the highest rank of myōkaku (wonderful enlightenment).
In the Latter Age of Degeneration, however, it seems that there is no person equipped with the capacity to be saved by the Buddha’s dharma, not even one out of 10,000, who would be able to enter the rank of shojū. Also Buddhist masters who guide the people are no longer Buddhas, who can make judgment about the capability of the people to understand and accept the Buddha’s teaching. Therefore, the Buddha has permitted us to guide the people, both believers (who will attain Buddhahood by following the Buddha’s teaching) and non-believers (who will eventually attain Buddhahood through the merit of reverse relationship), with the Lotus Sūtra from the beginning. Even after the death of the Buddha, however, the provisional sūtras may be preached first for those whose capacity is not for the Lotus Sūtra. Also, those who place emphasis on giving joy to the people should preach provisional sūtras first just as Śākyamuni Buddha did, while those who emphasize relieving the people of their sufferings first should preach the true Lotus Sūtra just as Never-Despising Bodhisattva did.
Ken Hōbō-shō, A Clarificaton of Slandering the True Dharma, Writings of Nichiren Shōnin, Doctrine 3, Pages 119-120.