Study

19. Sarah thy wife shall bear thee a son indeed Some take the adverb אבל (abal,) to mean ‘Truly.’ Others, however, more rightly suppose it to be used for increasing the force of the expression. For God rouses the slumbering mind of his servant; as if he would say, ‘The sight of one favor prevents thee from raising thyself higher; and thus it happens that thou dost confine thy thoughts within too narrow limits. Now, therefore, enlarge thy mind, to receive also what I promise concerning Sarah. For the door of hope ought to be sufficiently open to admit the word in its full magnitude.’

And I will establish my covenant with him He confines the spiritual covenant to one family, in order that Abraham may hence learn to hope for the blessing before promised; for since he had framed for himself a false hope, not founded on the word of God, it was necessary that this false hope should first be dislodged from his heart, in order that he might now the more fully rely upon the heavenly oracles, and might fix the anchor of his faith, which before had wavered in a fallacious imagination, on the firm truth of God. He calls the covenant everlasting, in the sense which we have previously explained. He then declares that it shall not be bound to one person only, but shall be common to his whole race, that it may, by continual succession, descend to his posterity. Yet it may seem absurd, that God should command Ishmael, whom he deprives of his grace, to be circumcised. I answer; although the Lord constitutes Isaac the firstborn and the head, from whom he intends the covenant of salvation to flow, he still does not entirely exclude Ishmael, but rather, in adopting the whole family of Abraham, joins Ishmael to his brother Isaac as an inferior member, until Ishmael cut himself off from his father’s house, and his brother’s society. Therefore his circumcision was not useless, until he apostatized from the covenant: for although it was not deposited with him, he might, nevertheless, participate in it, with his brother Isaac. In short, the Lord intends nothing else, by these words, than that Isaac should be the legitimate heir of the promised benediction.

20. And as for Ishmael. He here more clearly discriminates between the two sons of Abraham. For in promising to the one wealth, dignity, and other things pertaining to the present life, he proves him to be a son according to the flesh. But he makes a special covenant with Isaac, which rises above the world and this frail life: not for the sake of cutting Ishmael off from the hope of eternal life, but in order to teach him that salvation is to be sought from the race of Isaac, where it really dwells. We infers however, from this passage, that the holy fathers were by no means kept down to earth, by the promises of God, but rather were borne upwards to heaven. For God liberally and profusely promises to Ishmael whatever is desirable with respect to this earthly life: and yet He accounts as nothing all the gifts He confers on him, in comparison with the covenant which was to be established in Isaac. It therefore follow, that neither wealth, nor power, nor any other temporal gift, is promised to the sons of the Spirit, but an eternal blessing, which is possessed only by hope, in this world. Therefore, however we may now abound in delights, and in all good things, our happiness is still transient, unless by faith we penetrate into the celestial kingdom of God, where a greater and higher blessing is laid up for us.

It is however asked, whether Abraham had respect only to this earthly life when he prayed for his son? For this the Lord seems to intimate, when he declares that he had granted what Abraham asked, and yet only mentions the things we have recorded. But it was not God’s design to fulfill the whole wish of Abraham on this point; only he makes it plain that he would have some respect to Ishmael, for whom Abraham had entreated; so as to show that the fathers prayer had not been in vain. For he meant to testify that he embraced Abraham with such love, that, for his sake, he had respect to his whole race, and dignified it with peculiar benefits.

22. God went up from Abraham This expression contains a profitable doctrine, namely, that Abraham certainly knew this vision to be from God; for the ascent here spoken implies as much. And it is necessary for the pious to be fully assured that what they hear proceeds from God, in order that they may not be carried hither and thither but may depend alone upon heaven. And whereas God now, when he has spoken to us, does not openly ascend to heaven before our eyes; this ought to diminish nothing from the certainty of our faith; because a full manifestation of Him has been made in Christ, with which it is right that we should be satisfied. Besides, although God does not daily ascend upwards in a visible form, yet, in this his majesty is not less resplendent, that he raises us upwards by transforming us into his own image. Further, he gives sufficient authority to his word, when he seals it upon our hearts by his spirit.