Three separate synods (1341, 1349 ,1351) are regarded as a whole because they dealt with the same issue. This Synod dogmatized on the uncreated Essence and the uncreated Energy of God, as well as on Hesychasm, by condemning Varlaam the Calabrian. Rejected teaching that the attributes of God are identical with the essence. Condemned those who think the light of Christ’s Transfiguration was a created apparition. Condemned those who deny the energy of God is uncreated.
This Synod therefore preoccupied itself with theological issues, it was convened by an emperor (Synodic Volume of 1341 A.D.) and a Divinely-inspired father participated therein (Saint Gregory Palamas), and its rulings were accepted by the entire Church. Consequently, this Synod is of equal stature to an Ecumenical Synod. The 9th Ecumenical Synod of 1341 condemned the Platonic mysticism of Varlaam the Calabrian, who had arrived from the West as a proselyte to Orthodoxy. Rejection of this Platonic type of mysticism was of course the traditional Patristic response.