Nichiren Daishonin states in “Rissho Ankoku-Ron”:
You must immediately renounce your erroneous belief and take faith in the supreme teaching of the one vehicle of the Lotus Sutra. Then, this entire threefold world will become the Buddha land. How could the Buddha land ever decline? All the lands in the ten directions will transform into treasure realms. How could a treasure realm ever fall into ruin? If the nation never declines and the land is indestructible, you will find security and peace of mind.