This volume studies and analyses the work De lepra by Greek church father Methodius of Olympus?(3rd/4th century). The dialogue, which delves into the Old Testament legislation on leprosy in Leviticus 13,?is approached from an interdisciplinary perspective, including ecclesiastical history, Slavonic studies, and editorial studies. The contributions?serve as a complement to the publication of the Greek and Old Slavonic text of De lepra.