Speaking of the “sanzen daisen sekai (1,000 worlds),” the four continents to the four directions of north, south, east, and west, and Mt. Sumeru, the six heavens of the realm of desire, and the Brahma Heaven make one shitenge, 10 billion shitenge make a small one-thousand world; a thousand of a small one-thousand world make a medium one-thousand world; and a thousand of a medium one-thousand world make a great one-thousand world. Because of this triple multiplication by a thousand, it is called the “triple-thousand great one-thousand world (sanzen daisen sekai). There are an incalculable number (four million, hundred million-nayuta) of these great one-thousand worlds in the universe. Suppose someone feeds all the unenlightened people in all these worlds for 80 years, enabling them to read and recite all the scriptures of Buddhism with the exception of the Lotus Sūtra to become arhats with “three supernatural knowledge” and “six supernatural abilities,” Pratyekabuddha, or bodhisattvas of the highest stage. Compared to the merit of such a person, the merit of a person who upholds merely one verse, phrase, or character of the Lotus Sūtra even though he or she does not offer any kind of alms is a hundred, thousand, ten thousand, and hundred million times superior.

Tayūsakan-dono Gohenji, Reply to Lord Ikegami Munenaka, Writings of Nichiren Shōnin, Followers I, Volume 6, Page 107