In the Lotus Sūtra, chapter 23, it is said: “Propagate this sūtra throughout the world in the fifth five-hundred year period after My extinction lest it should be lost, and lest Devils and their followers, various heavenly beings, dragons, yakṣa and kumbhāṇḍa devils should take advantage of it.”

Flowers will return to their roots. The true taste of fruits remains in the earth. To my late Master Dōzen I have now dedicated all the merits I have accumulated in spreading the True Dharma.

Namu Myōhōrengekyō, Namu Myōhōrengekyō.

Hōon-jō, Essay on Gratitude, Writings of Nichiren Shōnin, Doctrine 3, Pages 59.