Essence and Energies

Think of the sun. No one can enter the sun's core, but its light and warmth genuinely reach us — and they are not something other than the sun; they are the sun, shining. So with God. His essence (Greek ousia) — what God is in Himself — is beyond every creature's reach, now and forever; not even the saints in glory comprehend it. His energies (Greek energeiai, "workings") are God Himself going forth: His grace, His light, His love, His providence. When the Church says that a person is filled with grace, she does not mean God has handed over a created present; she means the person is filled with God's own uncreated life.

The energies are not a fourth thing in God alongside the three Persons, nor intermediaries between God and the world. They are the one God — Father, Son, and Holy Spirit — in His self-giving. That is why the distinction does not divide God: as the tradition insists (and its critics have pressed), God is simple, and the essence-energies distinction is a real distinction without separation, like the sun and its shining.

Though the vocabulary was sharpened in the fourteenth century, the teaching runs back through the whole tradition. Moses asks to see God's glory and is told, "Thou canst not see my face: for there shall no man see me, and live" — yet God makes His goodness pass by, and Moses sees, as the King James Version puts it, His "back parts" (Exodus 33:20-23): the passing of God, never the face of the essence. St. Basil the Great, in the fourth century, gave the distinction its classic form: "we say that we know our God from His operations, but do not undertake to approach near to His essence. His operations come down to us, but His essence remains beyond our reach." (The old translation says "operations"; St. Basil's Greek word is energeiai — energies.)

The same grammar underlies the boldest verse in the New Testament: that we are called to be "partakers of the divine nature" (2 Peter 1:4). Partakers of the divine nature — yet Scripture equally insists that God "only hath immortality, dwelling in the light which no man can approach unto" (1 Timothy 6:16). The essence-energies distinction is how the Church holds both without blinking: we truly share in God — in His energies; we never become or comprehend God — in His essence.

In the 1330s a learned Calabrian monk, Barlaam, ridiculed the hesychast monks of Mount Athos who claimed that in deep prayer they beheld the uncreated light — the same light the apostles saw at the Transfiguration, when Christ's "face did shine as the sun" (Matthew 17:2). For Barlaam, God could be known only indirectly; any light the monks saw must be created. St. Gregory Palamas, an Athonite monk and later Archbishop of Thessalonica, answered that the light of Tabor is neither a creature nor the divine essence, but the uncreated energy of God — God Himself, truly seen, by eyes transfigured by grace. Councils at Constantinople in 1341, 1347, and 1351 vindicated his teaching, and the Church glorified him as a saint in 1368; the whole controversy is told in its own entry.

What was at stake was nothing less than the reality of theosis. If we cannot be united to God Himself, salvation shrinks to a created transaction — improved status, not shared life. If we were united to God's essence, the creature would dissolve into the Creator. The essence-energies distinction guards the Gospel's narrow path between those cliffs: real union, with the real God, who remains really God. The Church now keeps the memory of St. Gregory Palamas on the Second Sunday of Great Lent — a second Triumph of Orthodoxy — because to defend the uncreated light is to defend the possibility that human beings can be transfigured.