 “Deep mind” is the deeply entrusting mind. There are two aspects. One is to believe deeply and decidedly that you are a foolish being of karmic evil caught in birth-and-death, ever sinking and ever wandering in transmigration from innumerable kalpas in the past, with never a condition that would lead to emancipation. The second is to believe deeply and decidedly that Amida Buddha’s Forty-eight Vows grasp sentient beings, and that allowing yourself to be carried by the power of the Vow without any doubt or apprehension, you will attain birth. (Commentary on the Contemplation Sutra, quoted in Shinran CWS I: 85.)