"It is the same with Nichiren’s disciples and lay supporters. The Lotus Sutra reads, “Since hatred and jealousy toward this sutra abound even when the Thus Come One is in the world, how much more will this be so after his passing?” It also reads, “It will face much hostility in the world and be difficult to believe.” The Nirvana Sutra states, “By suffering an untimely death, rebuke, curses or humiliation, beatings with a whip or rod, imprisonment, starvation, adversity, or other minor hardships in this lifetime, one can avoid falling into hell.” The Parinirvāna Sutra says: “They may be poorly clad and poorly fed, seek wealth in vain, be born to an impoverished and lowly family or one with erroneous views, or be persecuted by their sovereign. They may be subjected to various other sufferings and retributions. It is due to the blessings obtained by protecting the Law that they can diminish in this lifetime their suffering and retribution.” -- Letter to the Brothers
and in the same writing:
"The doctrine of three thousand realms in a single moment of life revealed in the fifth volume of Great Concentration and Insight is especially profound. If you propagate it, devils will arise without fail. If they did not, there would be no way of knowing that this is the correct teaching. One passage from the same volume reads: “As practice progresses and understanding grows, the three obstacles and four devils emerge in confusing form, vying with one another to interfere . . . One should be neither influenced nor frightened by them. If one falls under their influence, one will be led into the paths of evil. If one is frightened by them, one will be prevented from practicing the correct teaching.” This statement not only applies to me, but also is a guide for my followers. Reverently make this teaching your own, and transmit it as an axiom of faith for future generations."