By St. Paisios the Athonite
Once, there was a monk from the Monastery of Saint Paul who had gone to the Monastery of Saint Gerasimos on the island of Kefallonia. During the Divine Liturgy, he stood in the Altar and was praying with his prayer rope - he would noetically say the prayer Lord Jesus Christ, Son of God, have mercy upon us - while outside they were chanting. They had also brought a possessed person into the church to be cured by Saint Gerasimos. While the monk was saying the prayer in the Altar, the demon was being seared outside and was shouting: