It was just the time for this brilliant and able ecclesiastic to succeed. The power and personal influence of the Mikado were weakening, the court swarmed with monks, the rising military classes were already safely under the control of the shavelings, and the pen of learning had everywhere proved itself mightier than the sword and muscle. Kōbō's particular dialectic weapons were those of the Yoga-chara, or in Japanese, the Shingon Shu, or Sect of the True Word.[23] He, like his Chinese master, taught that we can attain the state of the Enlightened or Buddha, while in the present physical body which was born of our parents. This branch of Buddhism is said to have been founded in India about A.D. 200, by a saint who made the discovery of an iron pagoda inhabited by the holy one, Vagrasattva, who communicated the exact doctrine to those who have handed it down through the Hindoo and Chinese patriarchs. The books or scriptures of this sect are in three sutras; yet the essential point in them is the Mandala or the circle of the Two Parts, or in Japanese Riyōbu. Introduced into China, A.D. 720, it is known as the Yoga-chara school. Kōbō finding a Chinese worm, made a Japanese dragon, able to swallow a national religion. In the act of deglutition and the long process of the digestion of Shintō, Japanese Buddhism became something different from every other form of the faith in Asia. Noted above all previous developments of Buddhism for its pantheistic tendencies, the Shingon sect could recognize in any Shintō god, demi-god, hero, or being, the avatar in a previous stage of existence of some Buddhist being of corresponding grade. For example,[24] Amatérasŭ or Ten-Shō-Dai-Jin, the sun-goddess, becomes Dai Nichi Niōrai or Amida, whose colossal effigies stand in the bronze images Dai Butsu at Nara, Kiōto and Kamakura. Ojin, the god of war, became Hachiman Dai Bosatsu, or the great Bodhisattva of the Eight Banners. Adopted as their patron by the fighting Genji or Minamoto warriors of mediæval times, the Buddhists could not well afford to have this popular deity outside their pantheon. For each of the thirty days of the month, a Bodhisattva, or in Japanese pronunciation Bosatsu, was appointed. Each of these Bodhisattvas became a Dai Miō Jin or Great Enlightened Spirit, and was represented as an avatar in Japan of Buddha in the previous ages, when the Japanese were not yet prepared to receive the holy law of Buddhism.