sentences:  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 "Avatamsaka Sutra" and the "Mahaprajñaparamita Sutra".In this way, Shinran expounds Jodo Shinshu thought.