Sun-Moon-Light Buddha expounded the Lotus Sutra prior to entering nirvana, and then assured one of his disciples of his future Buddhahood. The same can be said about Sakyamuni. The Lotus Sutra is the written teachings of Sakyamuni that were expounded prior to his death. In them, he too assured disciples of their future Buddhahood.
Sun-Moon-Light Buddha assigned one of his followers, Wonderful-Light Bodhisattva, to preserve and spread his teachings after he was gone. Likewise, Sakyamuni assigned his followers the task of spreading his teachings in this world after he should enter nirvana. This theme will be developed later, beginning in Chapter Ten, “The Teacher of the Law,” and continuing for many chapters after.
Thus this chapter introduces ideas which serve as a prelude to or foreshadowing of the philosophy of the Lotus Sutra, presenting themes which will gradually unfold in the chapters which follow.
Introduction to the Lotus Sutra