Nichiren Daishonin states in “Reply to Sairen-bo”:
The votaries of the Lotus Sutra must neither discard their faith nor dishonestly live their lives. If they devote their lives completely to the Lotus Sutra and practice precisely as stated in the golden words of the Buddha, they will, without fail, enjoy a long and healthy life, unaffected by misfortunes and illnesses. They will achieve the ultimate supreme effect not only in their future lifetimes but also in their current lives. Moreover, they will be able to attain the great aspiration of kosen-rufu.