Chapter 17 teaches the theory of practice that later came to be summarized as the “four forms and five kinds of faith.” The “four forms of faith” are: (1) having even a single moment of faith in and understanding of the sutra, (2) understanding its meaning, (3) being devoted to preaching it to others, and (4) continuing to maintain and develop profound faith and understanding. These were taken to have been taught during Shakyamuni Buddha’s lifetime and thus were called “four forms of faith for the present.” They involve developing a view of life and of the world in which one wholeheartedly accepts that the life of the Buddha is everlasting. In other words, it is to have faith instantly, understand its meaning, widely teach it to others, and in the process deepen one’s own faith.
The “five kinds of faith” include: (1) rejoicing from receiving the Lotus Sutra, (2) reading and reciting it, (3) preaching it, (4) concurrently practicing the six transcendental practices, and (5) intensively following the six transcendental practices. These faith practices benefit those who devotedly put them into actual practice after Shakyamuni is gone, and thus they were called “the five kinds of faith following the extinction of the Buddha.” They involve hearing the Lotus Sutra, rejoicing in and embracing it, reading and reciting it, teaching it to others and having them read it, and, at the same time, practicing the six transcendental practices—generosity, morality, patience, perseverance, concentration, and wisdom. Furthermore, one should be devoted to practice based on the six transcendental practices as the central focus of one’s life.
The chapter emphasizes the idea that the blessings that come from practicing these four forms and five kinds of faith are innumerable and boundless, far superior to building temples or stupas. Fundamental among them are the faith and joy that arise from hearing of the eternal life of the Buddha and the ultimate truth. No discipline or practice can bear fruit without them. In this sense, what is being taught is that these four forms and five kinds of faith are superior to the five transcendental practices (excluding the transcendental practice of wisdom), the most important Mahayana teaching about practice.