In Buddhism, various Buddhas have been established as objects of devotion for different pious believers. Since each Buddha has a good reason for being venerated, Buddhism permits us to worship any or all of them. Nevertheless, the Most-Venerable-One should be One, just as the Truth is One. The second half of the Lotus Sutra (Hommon) emphasizes such a Buddhist position regarding unity of faith. As the object of faith is absolute, it must relate to the realm of eternity. Generally we think of Sakyamuni as a historical figure, bound by the limitations of time and space, and only a provisional manifestation of the infinite, eternal Buddha. According to the Lotus Sutra, however, every Buddha, including the historical Sakyamuni Buddha, is a representation of the eternal original being of Sakyamuni.
Introduction to the Lotus Sutra