“[Also, he who slights, hates, envies, and bears a grudge against those who read, recite, copy and uphold this sūtra] … will fall into the Hell of Incessant Suffering upon death.”
The meaning of the above citations is quite clear. Yet, how they need my words of explanation! According to the Lotus Sūtra, slandering the Mahāyāna sūtras is more sinful than committing the five rebellious sins, such as killing one’s own parents, countless times. Therefore, such sinners will fall into the Hell of Incessant Suffering, from which they will never be able to escape.
Risshō Ankoku-ron, Treatise on Spreading Peace Throughout the Country by Establishing the True Dharma, Writings of Nichiren Shōnin, Doctrine 1, Page 133