The book consists of five visions granted to Hermas, a former slave. This is followed by twelve mandates or commandments, and ten similitudes, or parables. It commences abruptly in the first person: "He who brought me up sold me to a certain Rhoda, who was at Rome. After many years I met her again, and began to love her as a sister." As Hermas was on the road to Cumae, he had a vision of Rhoda. She told him that she was his accuser in heaven, on account of an unchaste thought the (married) narrator had once had concerning her, though only in passing. He was to pray for forgiveness for himself and all his house. He is consoled by a vision of the Church in the form of an aged woman, weak and helpless from the sins of the faithful, who tells him to do penance and to correct the sins of his children. Subsequently he sees her made younger through penance, yet wrinkled and with white hair; then again, as quite young but still with white hair; and lastly, she shows herself as glorious as a Bride.