Perichoresis

Perichoresis from Greek: περιχώρησις) alternatively called Circumincession (later Circuminsession) is a term in Christian theology first found within the Church Fathers but now reinvigorated among contemporary figures such as C. Baxter Kruger, Jürgen Moltmann, Miroslav Volf and John Zizioulas, amongst others. The noun first appears in the writings of Maximus Confessor(d.662) but the related verb 'perichoreo' is found earlier in Gregory of Nazianzus(d.389/90). Gregory used it to describe the relationship between the divine and human natures of Christ as did John of Damascus(d.749?) but he also extended it to the "interpenetration" of the three persons of the Trinity and it became a technical term for the latter.