Those who spread the Mystic Law are true disciples of the Daishonin who carry on his spirit. Nikko Shonin [the Daishonin’s direct disciple and successor] praised all who courageously propagated the Daishonin’s teachings, declaring to the effect that we should revere as respected seniors in faith those teachers of the Law who engage in propagation, regardless of whether they are junior in years of Buddhist practice (see GZ, 1618).20 And the benefits those who propagate the Law attain are boundless and immeasurable.

From The Wisdom for Creating Happiness and Peace, part 2, revised edition, p. 267