"To ignore the supremacy of the Lotus Sutra and assert that other sutras stand on a par with it is to commit the worst possible slander of the Law, a major offense of the utmost gravity. No analogy could suffice to illustrate it. The Buddhas, for all their powers of magical transformation, could never finish describing its consequences, and the bodhisattvas, with all the wisdom at their command, could not fathom its immensity. Thus, the “Simile and Parable” chapter of the Lotus Sutra says, “If I were to describe the punishments [that fall on persons who slander this sutra], I could exhaust a kalpa and never come to the end.” This passage means that not even a whole kalpa would be time enough to explain the full gravity of the offense of a person who acts even once against the Lotus Sutra.
For this reason, a person who commits this offense will never be able to hear the preaching of the Buddhas of the three existences, and will be cut off from the doctrines of the Thus Come Ones, who are as numerous as the sands of the Ganges. Such a person will move from darkness into greater darkness. How could he escape the pains and sufferings of the great citadel of the Avichi hell? Could a thoughtful person fail to dread the prospect of lengthy kalpas of misery?" (Embracing the Lotus Sutra).