Mary K. Farag is a historian of Christianity in late antiquity. Her book, What Makes a Church Sacred? Legal and Ritual Perspectives from Late Antiquity, has just appeared both in a paperback edition and an open access downloadable book. In general, Farag's research focuses on Christian liturgical practices in late antiquity and their role in the wider Greco-Roman, Byzantine, and Islamic worlds. Her geographic specialty of Egypt often leads her abroad to study Coptic and Arabic manuscripts and participate in archaeological projects. Farag is active in educational work in Coptic Orthodox and Eastern Orthodox parishes.