There are three entrances to the Dharma showing the power of preserving it. These are extensively explained in the chapter “The Disciples,” the chapter “Ease in Practice,” and other chapters.

The power of [preserving] the doctrine should be understood according to the [following passage from the Lotus] Sutra: “With determination he knows that the water is certainly near.” This means that by accepting and preserving this sutra [living beings] will acquire the water of buddha-nature and achieve highest, complete enlightenment.