Shinran in the context of "Amitābha"

Prince Shōtoku (聖徳太子, Shōtoku Taishi; February 7, 574 – April 8, 622), also known as Prince Umayado (厩戸皇子, Umayado no ōjî, Umayado no miko) or Prince Kamitsumiya (上宮皇子, Kamitsumiya no ōji, Kamitsumiya no miko), was a semi-legendary regent and a politician of the Asuka period in Japan who served under Empress Suiko. He was the son of Emperor Yōmei and his consort, Princess Hashihito no Anahobe, who was also Yōmei's younger half-sister. But later, he was adopted by Prince Shōtoken. His parents were relatives of the ruling Soga clan and also he was involved in the defeat of the rival Mononobe clan. The primary source of the life and accomplishments of Prince Shōtoku comes from the Nihon Shoki. The Prince is renowned for modernizing the government administration and for promoting Buddhism in Japan. He also had two different families that fought over his custody.

Over successive generations, a devotional cult arose around the figure of Prince Shōtoku for the protection of Japan, the Imperial Family, and for Buddhism. Key religious figures such as Saichō, Shinran and others claimed inspiration or visions attributed to Prince Shōtoku.

Jōdo Shinshū (浄土真宗, "The True Essence of the Pure Land Teaching"), also known as Shin Buddhism or True Pure Land Buddhism, is a Japanese tradition of Pure Land Buddhism founded by Shinran (1173–1263). Shin Buddhism is the most widely practiced branch of Buddhism in Japan, and its membership is claimed to include 10 percent of all Japanese citizens. The school is based on the Pure Land teachings of Shinran, which are based on those of earlier Pure Land masters Hōnen, Shandao and Tanluan, all of whom emphasized the practice of nembutsu (the recitation of Amida Buddha's name) as the primary means to obtain post-mortem birth in the Pure Land of Sukhavati (and thus, Buddhahood).

Shinran taught that enlightenment cannot be realized through one’s own self-power (jiriki), whether by moral cultivation, meditation, or ritual practice, but only through the other-power (tariki) of Amida Buddha’s compassionate Vow. Therefore, in Shin Buddhism, the nembutsu is not a meritorious deed or practice that produces merit and liberation, but an expression of joyful gratitude for the assurance of rebirth in the Pure Land, which has already been granted by Amida’s inconceivable wisdom and compassion. Doctrinally, Jōdo Shinshū is grounded in Shinran’s magnum opus, the Kyōgyōshinshō (Teaching, Practice, Faith, and Realization), which presents a comprehensive exegesis of Pure Land thought based on Indian and Chinese Mahāyāna sources. Shinran’s synthesis reframes the Pure Land path as the culmination of Mahāyāna Buddhism, emphasizing ideas like true faith (shinjin), other-power, the abandonment of self-power, the nembutsu of gratitude, and the all-embracing compassion of Amida Buddha's Original Vow.

The Monshu (門主 or 門首), or keeper of the gate is a term used to Jōdo Shinshū Buddhism that refers to the spiritual leader of either the Nishi Hongan-ji branch, or the Higashi Hongan-ji branch. Traditionally these monshu were direct descendants of the founder Shinran and thus part of the Ōtani family.

Different kanji are used for the term through pronunciation is the same: 門主 by Nishi Honganji, and 門首 by Higashi Honganji.

Rennyo (蓮如, 1415–1499) was the 8th Monshu (Patriarch) of the Hongan-ji Temple of the Jōdo Shinshū sect of Buddhism, and descendant of founder Shinran. Jodo Shinshu Buddhists often referred to him as the restorer of the sect (Chūkō no sō (中興の祖) in Japanese). He was also known as Shinshō-in (信証院), and posthumously Etō Daishi (慧灯大師). During the conflict and welter of the Ōnin War and the subsequent warfare (Sengoku era) that spread throughout Japan, Rennyo was able to unite most of the disparate factions of the Jodo Shinshu sect under the Hongan-ji, reform existing liturgy and practices, and broaden support among different classes of society. Through Rennyo's efforts, Jodo Shinshu grew to become the largest, most influential Buddhist sect in Japan.

Rennyo is venerated along with Shinran, and liturgical reforms he implemented are still in use today in Jodo Shinshu temples. Further, Rennyo's letters were compiled and are still recited in Jodo Shinshu liturgy.

Shinjin (信心) is a central concept in Japanese Pure Land Buddhism which indicates a state of mind which totally entrusts oneself to Amida Buddha's other-power (Japanese: tariki), having utterly abandoned any form of self effort (jiriki) or calculation (hakarai). The term has been variously translated as "faith", "entrusting heart", "true entrusting", "mind of true faith", and so on. It is also often left untranslated in English language publications on Shin Buddhism. It is a key concept in the thought of Shinran (1173–1263), the founder of Jōdo Shinshū. Shinran's concept of shinjin is rooted in the concept of faith found in Indian Pure Land scriptures and in the teachings of the Chinese Pure Land Buddhist masters Tanluan and Shandao, who also emphasized the importance of faith in Amitābha Buddha.

The term Shinjin (Chinese: Xìnxīn) is also used in other Buddhist traditions occasionally, though not as commonly as in Pure Land. The influential early Chan Buddhist poem Xìnxīn Míng (Faith-Mind Inscription) is one example.

A Dharma name is a new name acquired during both lay and monastic Buddhist initiation rituals in Mahayana Buddhism and monastic ordination in Theravada Buddhism (where it is more proper to call it Dhamma or Sangha name). The name is traditionally given by a Buddhist monastic, and is given to newly ordained monks, nuns and laity. Dharma names are considered aspirational, not descriptive.

Most of the well-known Buddhist teachers are known to have had many different Dharma names in the course of their careers, and often each name represents a stage of their career. For example, Prince Shotoku was also known as Prince Umayado and Prince Kamitsumiya. Shinran's original name was Matsuwakamaru; he was also known as Hanen, Shakku, Zenshin, Gutoku Shinran and Kenshin Daeshi. Nichiren's original name was Zennichi and his Dharma names were Zenshobo Rencho and Rissho Daishi. Similarly, the tradition of various Dharma names was also used by Zen monks, who also used art to promote Buddhism. The famous monk-painter Hokusai was also known as Shunro, Kako, Sori, Taito, Iitsu, Gakyojin and Manji. Even the famous samurai Miyamoto Musashi had several names, including the Dharma name Niten Doraku and the birthname Miyamoto Masana. The Zen monk Thích Nhất Hạnh also has used various Dharma names in the course of his career.

Kenjōdo Shinjitsu Kyōgyōshō Monrui (顕浄土真実教行証文類), often abbreviated to Kyōgyōshinshō (教行信証), is the magnum opus of Shinran Shonin, the founder of the Japanese Buddhist sect, Jōdo Shinshū. The title is often translated as The True Teaching, Practice, and Realization of the Pure Land Way in English. The work was written after Shinran's exile, and is believed to have been composed in the year 1224.

It represents a synthesis of various Buddhist sutras in Mahayana literature, including the Larger Sutra of Immeasurable Life, the Nirvana Sutra, the Āvataṃsaka Sutra and the Mahaprajñāpāramitā Sutra. In this way, Shinran expounds Jōdo Shinshū thought. The work is divided into six chapters, not including the Preface: