In the later Heian period, Priest Genshin (also called Eshin Sozu) wrote "Ojoyoshu" (The Essentials of Salvation), and this helped the spread of the faith in Jodo Sect (the Pure Land Sect of Buddhism).
平安時代後期には源信_(僧侶)（恵心僧都）の『往生要集』などの影響で浄土教信仰が盛んとなった。