In the Lotus Sūtra, fascicle 7 (“Divine Powers of the Buddha” chapter), preaches, “You should uphold this sūtra after My death. There is no doubt that such people will attain Buddhahood.” The holy teachings of the Buddha preached during His lifetime are all so precious that we cannot neglect them. They are all golden words of our Father, Lord Teacher Śākyamuni Buddha, the Great Sage. They are all true words. Nevertheless, they are divided into several categories such as Hinayāna, Mahāyāna, exoteric, esoteric, provisional Mahāyāna and true Mahāyāna. Compared to the sūtras of the non-Buddhist teachings such as Two Heavenly Beings and Three Hermits in India and Taoist priests in China, Buddhist sūtras are the teachings of the true words whereas these non-Buddhist scriptures are of lies. The Buddhist scriptures, however, can also be divided into those of true words, lies, idle talks, and harsh words. Among them, the Lotus Sūtra is the truest of all true words, the utmost of all truth.

Myōhō-ama Gozen Gohenji, A Reply to My Lady, the Nun Myōhō, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 142