My first monograph, The Shepherd of Hermas as Scriptura Non Grata: From Popularity in Early Christianity to Exclusion from the New Testament Canon, was published by Lexington Books, an imprint of Rowman & Littlefield, in 2023 (and subsequently absorbed by Bloomsbury in 2025). The book can be found on Amazon or from the publisher directly (click the title link above), or you can hear my podcast conversation on the New Books Network with fellow Apostolic Fathers / Early Christianity scholar Dr. Jonathon Lookadoo.

      What’s The Shepherd of Hermas, you ask? What’s that tower doing on the cover? I answered basic questions like these in a Q&A blog post about my book!


      Rob is a teacher, researcher, and author living with his wife, daughter, and Goldendoodle in Denver, Colorado. He earned his Ph.D. in Religious and Theological Studies from the University of Denver and Iliff School of Theology in 2019. With areas of expertise in New Testament, Christian Origins, and Early Christianity, Rob currently focuses his research on the biblical canon, the Shepherd of Hermas, and the patristic construction of heresiology and orthodoxy.