Towards the end of the sixth century, the Gallic bishop, St. Gregory of Tours, notes how wonderfully prosperity followed the kingdom which became Catholic, and contrasts it with the rapid decline and perishing away of the Arian kingdoms. And, indeed, this letter of the Pope may be termed a divine charter, commemorating the birthday of the great nation, which led the way, through all the nations of the West, for their restoration to the Catholic faith, and the expulsion of the Arian poison. No one has recorded, and no one knows, the details of that conversion, by which the Church, in the course of the sixth century, recovered the terrible disasters which she had suffered in the fifth; a conversion by which the sturdy sons of the North, from heretics, became faithful children, and by which she added the Teuton race, in all its new-born vigour and devotion, to those sons of the South, whose conversion Constantine crowned with his own. St. Gregory of Tours calls Clovis the new Constantine, and in very deed his conversion was the herald of a second triumph to the Church of God, which equals, some may think surpasses even, the grandeur of the first. It was fitting that the See of Peter should sound the note, which was its prelude, by the mouth of Anastasius, as the pastoral staff of St. Gregory was extended over its conclusion. Scarcely less remarkable than the words of Pope Anastasius were those addressed to the new convert by a bishop, the temporal subject of the Burgundian prince, Gundobald, an Arian, that is, by St. Avitus of Vienna, grandson of the emperor of that name. Before the baptismal waters were dry on the forehead of the Frankish king, he wrote to him in these words:[72]