Again, when the barbarians came, there came another occasion for the Roman bishops to increase their influence, and to raise themselves to a position of absolute supremacy throughout the West. Rome's extremity was their opportunity. Thus it will be recalled how, mainly through the intercession of Leo the Great, the fierce Attila was persuaded to turn back and leave Rome unpillaged; and how, through the intercession of the same pious bishop, the savage Genseric was prevailed upon to spare the lives of the inhabitants of the city at the time of its sack by the Vandals (see pp. 346, 347). So when the emperors, the natural defenders of the capital, were unable to protect it, the unarmed pastor was able, through the awe and reverence inspired by his holy office, to render services that could not but result in bringing increased honor and dignity to the Roman See. But if the misfortunes of Rome tended to the enhancement of the reputation and influence of the Roman bishops, much more did the final downfall of the capital tend to the same end. Upon the surrender of the sovereignty of the West into the hands of the emperor of the East, the bishops of Rome became the most important persons in Western Europe, and being so far removed from the court at Constantinople, gradually assumed almost imperial powers. They became the arbiters between the barbarian chiefs and the Italians, and to them were referred for decision the disputes arising between cities, states, and kings. It is easy to understand how directly and powerfully these things tended to strengthen the authority and increase the influence of the Roman See. THE MISSIONS OF ROME.--Again, the early missionary zeal of the church at Rome made her the mother of many churches, all of whom looked up to her with affectionate and grateful loyalty. Thus the Angles and Saxons, won to the faith by the missionaries of Rome, conceived a deep veneration for the Holy See and became her most devoted children. To Rome it was that they made their most frequent pilgrimages, and thither they sent their offering of "St. Peter's penny." And when the Saxons became missionaries to their pagan kinsmen of the continent, they transplanted into the heart of Germany these same feelings of filial attachment and love. Thus was Rome exalted in the eyes of the children of the churches of the West, until Gregory II. (715-731), writing the Eastern emperor, could say that to these peoples the very statue of the founder of the Roman church seemed "a god on earth." THE ICONOCLASTS.--The dispute about the worship of images, known in church history as the Iconoclastic controversy, which broke out in the eighth century between the Greek churches of the East and the Latin churches of the West, drew after it far-reaching consequences as respects the growing power of the Roman pontiffs.