The term Hexameron refers either to the genre of theological treatise that describes God's work on the six days of creation or to the six days of creation themselves. Most often these theological works take the form of commentaries on Genesis I.

The first volume of our new series, Fathers of the Church: Shorter Works, will be available in the summer of 2021. This series, to be printed only in paperback format, will offer English translations of treatises, homilies, poems, and letters of the Church Fathers in slim, easily affordable volumes. In this way a multitude of important writings will become accessible to scholars and students as well as the reading public. This is the first complete English translation of St. Gregory of Nyssa’s treatise On the Six Days of Creation (In Hexaemeron). It was probably written in 380-381, and is designed as both a defense and a critique of his recently deceased brother St. Basil’s better known homilies on the creation story as set out in the first chapter of Genesis. At the same time it incorporates Gregory’s own observations on the Genesis text, which reflect his desire to show the consistency between Scripture and the philosophy and natural science of his day A notable feature is Gregory’s presentation of God’s creation of the world as what has been called a “substantification” of God’s own will, creatio ex Deo rather than creatio ex nihilo. Other ideas of his seem interestingly to foreshadow those of modern science, notably his challenge to the idea that matter is a primary ontological category and his theory that the world as we know it developed through a process of “sequence” (akolouthia) from an originally simultaneous creation of everything. Gregory differs from Basil in maintaining that the “waters above the firmament” in Genesis 1 are spiritual rather than physical in nature. He uses a modified form of Aristotle’s theory of elements, together with some interesting observations on geography and meteorology, to construct a detailed and ingenious account of the “water cycle.” This description enables him to refute Basil’s notion that there needs to be an extra supply of physical water above the firmament so that the water lost from earthly seas and rivers through evaporation can be “topped up.”

Patristic Literature in Arabic Translations explores the Arabic translations of the Greek and Syriac Church Fathers, focusing on those produced in the Palestinian monasteries and at Sinai in the 8th–10th centuries and in Antioch during Byzantine rule (969–1084). These Arabic translations preserve patristic texts lost in the original languages. They offer crucial information about the diffusion and influence of patristic heritage among Middle Eastern Christians from the 8th century to the present. A systematic examination of Arabic patristic translations sheds light on the development of Muslim and Jewish theological thought. Contributors are Aaron Michael Butts, Joe Glynias, Habib Ibrahim, Jonas Karlsson, Sergey Kim, Joshua Mugler, Tamara Pataridze, Alexandre Roberts, Barbara Roggema, Alexander Treiger.

The Hexaemeron, attributed to Anastasios of Sinai (ob. post 700) is one of the most extensive mystical allegories surviving from the Byzantine era. The author offers in twelve books an anagogical exegesis of the first three chapters of Genesis.