Saint Gregory of Nyssa

The youngest voice in a family of saints

Gregory was born around 335 in Caesarea, the Cappadocian capital, into the same remarkable family that produced Basil the Great and their sister Macrina, both venerated as saints. Basil was the elder brother and, for much of Gregory's early life, something like a second father to him — it was Basil who ordained him a bishop, sending him in 372 to the small, unimportant see of Nyssa, partly so the family would have another reliable ally among Cappadocia's bishops during a period of intense doctrinal conflict over the nature of Christ. Gregory proved a less confident administrator than his brother, but a deeper and more original theological mind — a difference that became obvious only after Basil's death, when Gregory came fully into his own as a writer.

Three stages toward "luminous darkness"

Gregory's most enduring work, The Life of Moses, reads the biblical story of Moses — the burning bush, the ascent of Sinai, the plea to see God's glory — not primarily as history but as a map of the soul's own journey toward God. He describes that journey unfolding in three stages: purification, in which the soul is cleansed of sin and distraction; illumination, in which it begins to perceive God through signs and symbols, much as Moses first encountered him in the light of the burning bush; and finally what Gregory calls a "luminous darkness" — the point at which the mind, having exhausted every concept and image it can form of God, meets him instead in a kind of radiant unknowing, following Moses into the cloud that covered the summit of Sinai. It's a strikingly counterintuitive idea for a theologian to build a whole spirituality around: that the closer the soul draws to God, the less it is able to describe what it finds, and that this very darkness is itself a form of deeper light.

Father of Fathers, father of mysticism

Gregory died around 394 or 395, having outlived both his brother Basil and their old family friend Gregory of Nazianzus, the other two Cappadocian Fathers. His theological legacy took longer to be fully recognized than theirs: Rome has never formally declared him a Doctor of the Church, the title given to Basil, but the Second Council of Nicaea in 787 praised him informally as a "Father of Fathers" — high esteem, though not the same formal distinction. It's his mystical writing, above all The Life of Moses, that later generations of theologians came to prize most, and that earned him the title "Father of Mysticism," recognition for having shaped how Christian writers for centuries afterward would try to put into words an experience of God that, by Gregory's own account, ultimately resists being put into words at all. His feast is kept on March 9 in the Western calendar and January 10 in the East.