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 the Greek language, but a Latin translation was made very shortly afterwards. Only the Latin version has been preserved in full; of the Greek, the last fifth or so is missing.
The shepherd is one of the meanings that was probably attached to some figurines of the Good Shepherd as well as a symbol for Christ, or a traditional pagan kriophoros.
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