I received your letter, in which you said that you used to chant one chapter of the Lotus Sūtra each day, taking twenty-eight days to finish chanting it once; and that recently, however, you chant only the “Previous Life of the Medicine-King Bodhisattva” chapter each day. Then you asked: “Should I chant each chapter each day as I used to?”

You may chant the whole twenty-eight chapters, one chapter, one paragraph, one sentence or even one character of the Lotus Sūtra a day. Or, you may chant the daimoku, “Namu Myōhō Renge Kyō,” just once in a day or once in your whole life. Even if you may never chant the daimoku yourself, you may rejoice at hearing others chant it just once in your whole life. Or you may rejoice with others who rejoice at hearing a voice chanting the daimoku. The joy of the daimoku chanting transmitted 50 times this way from person to person, will grow weaker steadily until in the last fiftieth person it will be as uncertain as the mind of a two- or three-year-old baby or as unpredictable as a horse or a cow, which cannot tell the difference between head and tail. Nevertheless, the merit of such people is one hundred thousand billion times greater than that of those whose wisdom is as great as Śāriputra, Maudgalyāyana, Mañjuśrī, and Maitreya, but put faith in sūtras other than the Lotus Sūtra and memorize them all.

This is explained in the chapter on the “Merits of a Person Who Rejoices at Hearing This Sūtra” of the Lotus Sūtra as well as in the 60-volume works of Grand Masters T’ien-t’ai and Miao-lê. The Lotus Sūtra states also that even the Buddha cannot measure the merit of those who put faith in even one character or sentence of the Lotus Sūtra. The Buddha has boundless wisdom; He can measure the amount of rain that has continued to fall for one or two weeks in the whole universe. Nevertheless, He cannot measure the merit of those who chant just one character or phrase of the Lotus Sūtra. How can we, sinners and the ignorant, measure this merit?

Regardless, very few people believe in the Lotus Sūtra, which is worthy of such great merit.

Gassui Gasho, A Letter on Menstruation, Nyonin Gosho, Letters Addressed to Female Followers, Page 22-24