Event Factoid: After ten years of prayer and contending with demons, John was granted
divine authority over his enemies and sprititual clarity, so that his
understanding of Scripture equalled or surpassed most scholastics.
Sources:
E. W Brooks, trans.,Lives of the Eastern Saints I,Patrologia Orientalis 17.1 (1923), https://archive.org/stream/patrologiaorient17pariuoft#page/n7/mode/2up, p: 41.