Four leaders of the Bodhisattvas who emerged from the ground are named, and they are Superior-Practice, Limitless-Practice, Pure-Practice, and Steadily-Established-Practice. I think it is important to note that practice lies at the heart of their names. In Nichiren’s writing titled Shoho Jiso Sho we are encouraged to practice and endeavor because without practice and without study there really is no such thing as Buddhism. At the heart of Buddhism is making great effort at practicing and changing our lives, something that does not happen without concerted continued effort.
Lecture on the Lotus Sutra