[I]n the Lotus Sūtra we find many things mysterious and difficult to believe. Yet when we think of doubting the Lotus Sūtra, the Buddha of Many Treasures testified it to be true, Lord Preacher Śākyamuni Buddha Himself declared it to be His direct and true words, and the Buddhas in manifestation throughout the universe extolled it by extending their wide and long tongues to the Brahma Heaven. This is like a father’s letter of conveyance attached by a mother’s signed deed and approved by a wise king. When they are in complete agreement, how can anyone doubt this?

Matsuno-dono Goshōsoku, Letter to Lord Matsuno, Writings of Nichiren Shōnin, Volume 7, Followers II, Page 66