He was a native of Egypt; his name is that of one of the Egyptian gods. He fled to the desert to live as a hermit, but after many years he became a well-known spiritual guide and founded several monastic communities. A first-hand account of him, by Rufinus, says 'In appearance he is like an angel of God; an old man of ninety with a long snow-white beard. The impression left by his presence is delightful. His gaze is imbued with more-than-human radiance.' He received communion every day. So detached was he from the world that his disciples once had to remind him that Pascha had come. Hearing this, he went outside, raised his hands to heaven and prayed without ceasing for three days. When he had done he said to his disciples 'This is the monk's celebration of Pascha: the lifting up of the mind to unity with God.' He reposed in peace at a great age.