The great merit aquired even slandering the Lotus Sutra

"Moreover, he knew that for ordinary people in the latter age it will be a difficult thing indeed to avoid falling into the evil paths of existence. But he felt that, if they must fall into the evil paths in any case, it was far better that they should do so as a result of slandering the Lotus Sutra than as a result of some worldly sin. For, as a certain text tells us, “Those who hear the Law, speak slanderously of it, and fall into hell as a result, are still superior to those who offer alms to Buddhas as numerous as the sands of the Ganges.” The meaning of this passage is that, even if one slanders the Lotus Sutra and falls into hell as a result, one will acquire a hundred, thousand, ten thousand times more merit than if one made offerings and paid homage to Shakyamuni, Amida, and as many other Buddhas as there are sands in the Ganges."