The Shepherd of Hermas (Hermeneia: A Critical & Historical Commentary on the Bible)
"With more than twenty volumes in print at this point, it is evident that Hermeneia must be regarded as the premier biblical commentary series in the English-speaking world today. While some other biblical commentary series have suffered from the uneven quality of the contributions, the individual volumes of Hermeneia are notable for their uniformly high caliber. The quality of scholarship throughout is first-rate. The Hermeneia commentaries have set a standard of excellence in biblical interpretation that future series will be hard-pressed to meet." -----Michael L. Barre, The Catholic Biblical Quarterly