This accordingly the prophet also was intimating, when he said, “Look unto the hard rock, whence ye are hewn, and to the hole of the pit, whence ye are digged: look unto Abraham your father, and unto Sarah that bare you.” Now of this prophecy, you see, he reminds them, showing that if at the beginning he made him a father, as marvellously as if he had made him so out of stones, it was possible for this now also to come to pass. And see how he both alarms them, and cuts them off: in that he said not, “He had already raised up,” lest they should despair of themselves, but that He “is able to raise up:” and he said not, “He is able out of stones to make men,” but what was a much greater thing, “kinsmen and children of Abraham.”