It is preached in the “Life Span of the Buddha” chapter of the Lotus Sūtra, “The scriptures that I, the Buddha, expound are all for the purpose of emancipating all living beings. For this purpose I guide them in various ways, sometimes speaking of myself, sometime of others. Sometimes I present myself, sometimes others. Sometimes I show my own actions, sometimes those of others.”

Accordingly, who among the great beings — Zentoku Buddha of the World Without Worry to the east; the Great Sun Buddha in the center of the universe; various Buddhas in the worlds throughout the universe; the past seven Buddhas who appeared in this world; various Buddhas in the past, present, and future; the direct disciples of the Original Buddha who emerged from the earth such as Bodhisattva Superior Practice; bodhisattvas of theoretical teachings, such as Mañjuśrī, Śrāvaka disciples such as Śāriputra, the King of the Mahābrahman Heaven who controls the triple world; the King of Devils who lives in the Sixth Heaven in the realm of desire; Indra who controls the Trāyastriṃsá Heaven; or Sun Deity, Moon Deity, Deity of the Stars, innumerable stars such as the Great Bear, twenty-eight stars, Five Stars, Seven Stars and 84,000 Stars; those who occupy the headship of various places throughout the world such as the King of asura demons, god of the heavens, god of the earth, god of the mountains, god of the ocean, god of the house, and god of the village — is not a manifestation of the Lord Teacher Śākyamuni Buddha?

Nichigen-nyo Sakabutsu Kuyōji, Construction of a Statue of Śākyamuni by Lady Nichigen, Writings of Nichiren Shōnin, Followers II, Volume 7, Page 123-124