Of the way in which the world was thus evangelised we have an instance recorded by Photius, who says that Caius, a grave and learned priest of the Roman Church, was ordained by Pope Zephyrinus (who sat from 202 to 218), Bishop of the Nations, that is, without designation of any particular diocese, as if anointed and crowned for a kingdom, which by his valour and wisdom he was to obtain for himself. In this way the Roman Pontiffs consecrated a great number of bishops, whom they sent to bring the provinces under the yoke of the faith, as recorded above by St. Innocent.[70] But it is to be noted that those who were thus sent out during two centuries from the first age were not elected by the people of the several churches which they founded. They came to them by authority from without—the authority of the Apostles and the Apostolic See, mediately or immediately. In the cases just mentioned the mission was immediate: in other cases, where it was derived from some Patriarchal See or from a metropolis, it still descended from that original mission of the Apostles, and the distribution of authority made by Peter at their head. For the whole of this mission there is one great type and source; our Lord at the head of His Apostles is the prelude to the bishop in the midst of his presbytery. He repeats Himself in every diocese, the first and everlasting Bishop, whose heirs spread throughout the world. All is from above. But each bishop's chair thus established is a centre of dogmatic truth and of moral force. The government extending thus over the whole Church is a mean between autonomy and centralisation. "The bishop is contained in the Church, and the Church in the bishop:" it is "a flock united to its pastor." This is its local character: a most living authority, and a most careful representation of those governed. What it is in reference to the like authority planted elsewhere, we shall see presently.