XXVIII
Of the change of name in Abraham and Sarah, who received the gift of fecundity when they were incapable of regeneration owing to the barrenness of one, and the old age of both.
Now when a promise so great and clear was made to Abraham, in which it was so plainly said to him, “I have made thee a father of many nations, and I will increase thee exceedingly, and I will make nations of thee, and kings shall go forth of thee. And I will give thee a son of Sarah; and I will bless him, and he shall become nations, and kings of nations shall be of him,”924—a promise which we now see fulfilled in Christ—from that time forward this couple are not called in Scripture, as formerly, Abram and Sarai, but Abraham and Sarah, as we have called them from the first, for everyone does so now. The reason why the name of Abraham was changed is given: “For,” He says, “I have made thee a father of many nations.” This, then, is to be understood to be the meaning of “Abraham”; but “Abram,” as he was formerly called, means “exalted father.” The reason of the change of Sarah’s name is not given; but as those say who have written interpretations of the Hebrew names contained in these books, Sarah means “my princess,” and Sarai “strength.” Whence it is written in the Epistle to the Hebrews, “Through faith also Sarah herself received strength to conceive seed.”925 For both were old, as the Scripture testifies; but she was also barren, and had ceased to menstruate, so that she could no longer bear children even if she had not been barren. Further, if a woman is advanced in years, yet still retains the custom of women, she can bear children to a young man, but not to an old man, although that same old man can beget, but only of a young woman; as after Sarah’s death Abraham could of Keturah, because he met with her in her lively age. This, then, is what the apostle mentions as wonderful, saying, besides, that Abraham’s body was now dead;926 because at that age he was no longer able to beget children of any woman who retained now only a small part of her natural vigour. Of course we must understand that his body was dead only to some purposes, not to all; for if it was so to all, it would no longer be the aged body of a living man, but the corpse of a dead one. Although that question, how Abraham begot children of Keturah, is usually solved in this way, that the gift of begetting which he received from the Lord, remained even after the death of his wife, yet I think that solution of the question which I have followed is preferable, because, although in our days an old man of a hundred years can beget children of no woman, it was not so then, when men still lived so long that a hundred years did not yet bring on them the decrepitude of old age.
XXIX
Of the three men or angels, in whom the Lord is related to have appeared to Abraham at the oak of Mamre.
God appeared again to Abraham at the oak of Mamre in three men, who it is not to be doubted were angels, although some think that one of them was Christ, and assert that He was visible before He put on flesh. Now it belongs to the divine power, and invisible, incorporeal, and incommutable nature, without changing itself at all, to appear even to mortal men, not by what it is, but by what is subject to it. And what is not subject to it? Yet if they try to establish that one of these three was Christ by the fact that, although he saw three, he addressed the Lord in the singular, as it is written, “And, lo, three men stood by him: and, when he saw them, he ran to meet them from the tent-door, and worshipped toward the ground, and said, Lord, if I have found favour before thee,”927 etc.; why do they not advert to this also, that when two of them came to destroy the Sodomites, while Abraham still spoke to one, calling him Lord, and interceding that he would not destroy the righteous along with the wicked in Sodom, Lot received these two in such a way that he too in his conversation with them addressed the Lord in the singular? For after saying to them in the plural, “Behold, my lords, turn aside into your servant’s house,”928 etc., yet it is afterwards said, “And the angels laid hold upon his hand, and the hand of his wife, and the hands of his two daughters, because the Lord was merciful unto him. And it came to pass, whenever they had led him forth abroad, that they said, Save thy life; look not behind thee, neither stay thou in all this region: save thyself in the mountain, lest thou be caught. And Lot said unto them, I pray thee, Lord,
