It is most important for a man of wisdom to spread the Lotus Sūtra by keeping the difference of time in mind. For instance, for those who are thirsty, water is just what is necessary, not a bow and arrow or arms. What is needed for a naked person is clothing, not water. One can understand the overarching principle through this one example. If a fierce god spreads the Lotus Sūtra, you should donate your own flesh to him because a fierce god is fond of flesh. It is useless to donate clothing or other food to him. If an evil king tries to destroy the Lotus Sūtra, never obey his order even at the cost of life. When high priests who observe the precepts and are devoted to the pursuit of faith pretend to spread the Lotus Sūtra outwardly, but try to destroy it inwardly, you must reprimand them vigorously. The Lotus Sūtra, “Encouragement for Upholding This Sūtra” chapter, admonishes us to, “Solely to venerate the Supreme Way without sparing one’s own life.” It is preached in the Nirvana Sūtra, “Even at the cost of life, one should not conceal the king’s orders.” Grand Master Chang-an interprets this in his Annotation on the Nirvana Sūtra, “The reason why it is said that even at the cost of life one should not conceal the teaching is because life is not as important as the Dharma. We must spread the Dharma even at the cost of life.”

Hōren-shō, Letter to Hōren, Writings of Nichiren Shōnin, Volume 6, Followers I, Page 58