According to the “Devadatta” chapter, the relationship between Śākyamuni Buddha and his treacherous cousin was not purely a matter of this lifetime. The very fact that he has become the Buddha, Śākyamuni says, is due to Devadatta’s past “good and virtuous friendship.” “Good and virtuous friendship” here translates kalyāvamitra (J. zenchishiki, literally, “good friend”), one who teaches or encourages another on the Buddhist path. In view of the traditional accounts of his repeated betrayals, Devadatta would seem to have been no “friend” at all. Nichiren, however, took this passage as teaching not only the inevitability of meeting enemies in one’s efforts to spread the dharma — “the Buddha and Devadatta are like a form and its shadow; in lifetime after lifetime, they are never separated” — but also the importance of appreciating the opportunity for spiritual development that their hostility makes possible. “In this age as well, it is not one’s allies but one’s bitterest enemies who help one improve,” he wrote. In this context, Nichiren expressed gratitude for the clerics and government officials who had persecuted him, adding that, without them, he could not have proven himself as a votary of the Lotus Sutra.