And, on the other hand, as the counterpart of these anticipations, we are met by certain announcements in Scripture, more or less obscure and needing a comment, and claimed by the Papal See as having their fulfilment in itself. Such are the words, "Thou art Peter, and upon this rock I will build My Church; and the gates of hell shall not prevail against it, and I will give unto Thee the Keys of the Kingdom of Heaven." Again: "Feed My lambs, feed My sheep." And "Satan hath desired to have you; I have prayed for thee, and when thou art converted, strengthen thy brethren." Such, too, are various other indications of the Divine purpose as regards St. Peter, too weak in themselves to be insisted on separately, but not without a confirmatory power; such as his new name, his walking on the sea, his miraculous draught of fishes on two occasions, our Lord's preaching out of his boat, and His appearing first to him after His resurrection. It should be observed, moreover, that a similar promise was made by the patriarch Jacob to Judah: "Thou art he whom thy brethren shall praise: the sceptre shall not depart from Judah till Shiloh come;" yet this promise was not fulfilled for perhaps eight hundred years, during which long period we hear little or nothing of the tribe descended from him. In like manner, "On this rock I will build My Church," "I give unto thee the Keys," "Feed My sheep," are not precepts merely, but prophecies and promises, promises to be accomplished by Him who made them, prophecies to be fulfilled according to the need, and to be interpreted by the event,--by the history, that is, of the fourth and fifth centuries, though they had a partial fulfilment even in the preceding period, and a still more noble development in the middle ages. 10.