An example how Nichiren interprets the Lotus Sutra (nothing like Soka Gakkai's and Nichiren Shoshu's interpretation of the Lotus Sutra)

“The World-Honored One in his great mercy makes use of a rare thing, in pity and compassion teaching and converting, bringing benefit to us. In numberless millions of kalpas who could ever repay him? Though we offer him our hands and feet, bow our heads in respectful obeisance, and present all manner of offerings, none of us could repay him. Though we lift him on the crown of our heads, bear him on our two shoulders, for kalpas numerous as Ganges sands reverence him with all our hearts; though we come with delicate foods, with countless jeweled robes, with articles of bedding, various kinds of potions and medicines; with ox-head sandalwood and all kinds of rare gems, construct memorial towers and spread the ground with jeweled robes; though we were to do all this by way of offering for kalpas numerous as Ganges sands, still we could not repay him.” -- Lotus Sutra Chapter 4

“Shakyamuni Buddha our father and mother, who is endowed with the three virtues of sovereign, teacher and parent, is the very one who encourages us, the people driven out by all the other Buddhas, saying, ‘I alone can save them’. The debt of gratitude we owe him is deeper than the ocean, weightier than the earth, vaster than the sky. Though we were to pluck out our two eyes and place them before him as an offering until there were more eyes there than stars in the sky, though we were to strip off our skins and spread them out by the hundreds of ten thousands until they blanketed the ceiling of heaven, though we were to give him our tears as offerings of water and present him with flowers for the space of a hundred billion kalpas, though we were to offer him our flesh and blood for innumerable kalpas, until our flesh piled up like mountains and our blood overflowed like vast seas, we could never repay a fraction of the debt we owe to this Buddha!” -- Nichiren