The use of amulets and talismans in pagan antiquity was widespread. The word "amuletum" itself occurs in Pliny, and many monuments show how objects of this kind were worn around the neck by all classes. Gregory the Great sent to Queen Theodelinda of the Lombards two "phylacteria" containing a relic of the True Cross and a sentence from the Gospels, which her son Adulovald was to wear around his neck. However, the practice of wearing "encolpia" (small pectoral crosses) lent itself to abuses when magical formulas began to be joined to Christian symbols, as was regularly the practice of the Gnostics. Some fathers of the fourth and later centuries protested against Gnostic phylacteries worn by Christians. A coin-like object found in catacombs bears on one side a depiction of the martyrdom of a saint, presumably St. Lawrence, who is being roasted upon a gridiron in the presence of the Roman magistrate. The Christian character of the scene is shown by the "chi-rho" chrisma, the alpha and omega, and the martyr's crown. On the reverse is depicted the tomb of St. Lawrence, while a figure stands in a reverent attitude before it holding aloft a candle.