Therefore, it is preached in the Lotus Sūtra, fascicle 2 (chapter 3 on “A Parable”): “This triple world is My domain. Living beings therein are all My children. Now there are many sufferings in this world, and only I can save them all. Though I taught this to them, they did not believe Me, because they were attached to greed and defilement.” These statements mean that Śākyamuni Buddha is the parent, the teacher and the master for the people. For us, the Buddha of Infinite Life and Medicine Master Buddha are masters, but not parents or teachers. Only Śākyamuni Buddha is the compassionate Buddha who possesses the three virtues of the master, teacher and parent. There are many kinds of parents, but no one is as great as Śākyamuni. There are also many kinds of teachers and masters, but no one is superior to Him. If people are against the Buddha’s teachings, they will be abandoned by the gods of heaven and earth. They are the most undutiful; therefore, it is preached, “Though I taught this to them they did not believe Me.”

Nanjō Hyōe Shichirō-dono Gosho, A Letter to Lord Nanjō Hyōe Shichirō, Writings of Nichiren Shōnin, Doctrine 3, Pages 140.