It isn’t enough that the Buddha merely spew out some teaching called the Lotus Sutra, because that is what it would be if it weren’t for the concept of ensuring it will be taught to countless beings in our world. Even for ourselves, Buddhism is not just about taking faith in the Lotus Sutra. It is not just about practicing for our own enlightenment. It is not just about teaching others. It also includes ensuring that other are continually encouraged and supported in their practice, and the cycle continues on into the future.
Lecture on the Lotus Sutra