The Shepherd of Hermas is a Christian literary work of the late 1st or mid-2nd century, considered a valuable book by many Christians, and considered canonical scripture by some of the early Church fathers such as Irenaeus. The Shepherd of Hermas was very popular among Christians in the 2nd and 3rd centuries. It was bound as part of the New Testament in the Codex Sinaiticus, and it was listed between the Acts of the Apostles and the Acts of Paul in the Codex Claromontanus.
The work comprises five visions, twelve mandates, and ten parables. It relies on allegory and pays special attention to the Church, calling the faithful to repent of the sins that have harmed it.
The book was originally written in Rome, in Greek, but translated into Latin shortly afterwards. Evidence suggests that the book was written at least in the Second Century (possibly) by a Christian named Hermas - though the identity of this person is uncertain.