The story of St Peter's imprisonment and miraculous release by an Angel of God is told in Acts ch. 12. The chains which fell from his hands were collected by Christians and passed down through the generations as precious relics, finally coming to Constantinople and being placed in the Church of St Peter, where they worked many miracles and healings.

There is nothing superstitious about the veneration of clothing and other objects belonging to the Saints; the Acts of the Apostles describes how handkerchiefs or aprons that had touched the Apostle Paul would heal the sick (ch. 19), and that even the shadow of the Apostle Peter healed those on whom it fell (ch. 5). In the twentieth century, a shirt worn by St Nektarios on his death-bed healed a paralyzed man. The sanctity of those united to God extends not only to their bodies but at times to their garments.