Palamism in the context of "Energies of God"

In Eastern Orthodox Christian theology, the Tabor Light (Ancient Greek: Φῶς τοῦ Θαβώρ "Light of Tabor", or Ἄκτιστον Φῶς "Uncreated Light", Θεῖον Φῶς "Divine Light"; Russian: Фаворский свет "Taboric Light"; Georgian: თაბორის ნათება) is the light revealed on Mount Tabor at the Transfiguration of Jesus, identified with the light seen by Paul at his conversion.

As a theological doctrine, the uncreated nature of the Light of Tabor was formulated in the 14th century by Gregory Palamas, an Athonite monk, defending the mystical practices of Hesychasm against accusations of heresy by Barlaam of Calabria. When considered as a theological doctrine, this view is known as Palamism after Palamas.

20th century Eastern Orthodox theology has been dominated by neo-Palamism, the revival of St. Palamas and hesychasm. John Behr characterizes Eastern Orthodox theology as having been "reborn in the twentieth century." Norman Russell describes Eastern Orthodox theology as having been dominated by an "arid scholasticism" for several centuries after the fall of Constantinople. Russell describes the postwar re-engagement of modern Greek theologians with the Greek Fathers, which occurred with the help of diaspora theologians and Western patristic scholars. A significant component of this re-engagement with the Greek Fathers has been a rediscovery of Palamas by Greek theologians; Palamas had previously been given less attention than the other Fathers.

According to Michael Angold, the "rediscovery of [Palamas'] writings by theologians of the last century has played a crucial role in the construction of present-day [Eastern] Orthodoxy.

Gregory Palamas (/pæləˈmɑːs/; Byzantine Greek: Γρηγόριος Παλαμᾶς, romanized: Grēgórios Palamâs, pronounced [ɣriˈɣo.ri.os pa.laˈmas]; c. 1296 – 14 November 1359) was a Byzantine Greek theologian and Eastern Orthodox cleric of the late Byzantine period. A monk of Mount Athos (modern Greece) and later archbishop of Thessalonica, he is famous for his defense of hesychast spirituality, the uncreated character of the light of the Transfiguration, and the distinction between God's essence and energies (i.e., the divine will, divine grace, etc.). His teaching unfolded over the course of three major controversies, (1) with the Italo-Greek Barlaam between 1336 and 1341, (2) with the monk Gregory Akindynos between 1341 and 1347, and (3) with the philosopher Gregoras, from 1348 to 1355. His theological contributions are sometimes referred to as Palamism, and his followers as Palamites.

Gregory has been venerated as a saint in the Eastern Orthodox Church since 1368. Within the Post Vatican II Catholic Church, he has also been called a saint; Pope John Paul II repeatedly called Gregory a great theological writer. Since 1971, the Melkite Greek Catholic Church has venerated Gregory as a saint. Some of his writings are collected in the Philokalia, and since the Ottoman period, the second Sunday of Great Lent is dedicated to the memory of Gregory Palamas in most branches of the Eastern Orthodoxy, while in some Eastern Catholic Churches, the issue is disputed.