Extremely popular in its time, The Shepherd of Hermas is a second-century work often used for instruction of catechumens, and in fact, is widely regarded as scripture. In it Hermas, a rich freed slave whose wealth was not always lawfully obtained, undergoes and relates several visions (including one from an angel disguised as a shepherd), repents, and offers advice on Christian teaching and behavior.

Comprehensive and careful, Carolyn Osiek's is the only full-length commentary on "The Shepherd" in English. Hermas's revelations afford us glimpses of religious imagination, social world, and moral ideals among early second-century Romans.