John Calvin Complete Commentary - Romans 4:19 - 4:19

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John Calvin Complete Commentary - Romans 4:19 - 4:19


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19.In faith, etc. If you prefer to omit one of the negatives you may render it thus, “ weak in faith, he considered not his own body,” etc.; but this makes no sense. He indeed shows now more fully what might have hindered, yea, and wholly turned Abraham aside from receiving the promise. A seed from Sarah was promised to him at a time when he was not by nature fit for generating, nor Sarah for conceiving. Whatever he could see as to himself was opposed to the accomplishment of the promise. Hence, that he might yield to the truth of God, he withdrew his mind from those things which presented themselves to his own view, and as it were forgot himself.

You are not however to think, that he had no regard whatever to his own body, now dead, since Scripture testifies to the contrary; for he reasoned thus with himself, “ a child be born to a man an hundred years old? and shall Sarah, who is ninety, bear a son?” But as he laid aside the consideration of all this, and resigned his own judgment to the Lord, the Apostle says, that he considered not, etc.; and truly it was a greater effort to withdraw his thoughts from what of itself met his eyes, than if such a thing came into his mind.

And that the body of Abraham was become through age incapable of generating, at the time he received the Lord’ blessing, is quite evident from this passage, and also from Gen_17:17, so that the opinion of [Augustine ] is by no means to be admitted, who says somewhere, that the impediment was in Sarah alone. Nor ought the absurdity of the objection to influence us, by which he was induced to have recourse to this solution; for he thought it inconsistent to suppose that Abraham in his hundredth year was incapable of generating, as he had afterwards many children. But by this very thing God rendered his power more visible, inasmuch as he, who was before like a dry and barren tree, was so invigorated by the celestial blessing, that he not only begot Isaac, but, as though he was restored to the vigor of age, he had afterwards strength to beget others. But some one may object and say, that it is not beyond the course of nature that a man should beget children at that age. Though I allow that such a thing is not a prodigy, it is yet very little short of a miracle. And then, think with how many toils, sorrows, wanderings, distresses, had that holy man been exercised all his life; and it must be confessed, that he was no more debilitated by age, than worn out and exhausted by toils. And lastly, his body is not called barren simply but comparatively; for it was not probable that he, who was unfit for begetting in the flower and vigor of age, should begin only now when nature had decayed.

The expression, being not weak in faith, take in this sense — that he vacillated not, nor fluctuated, as we usually do under difficult circumstances. There is indeed a twofold weakness of faith — one is that which, by succumbing to trying adversities, occasions a falling away from the supporting power of God — the other arises from imperfection, but does not extinguish faith itself: for the mind is never so illuminated, but that many relics of ignorance remain; the heart is never so strengthened, but that much doubting cleaves to it. Hence with these vices of the flesh, ignorance and doubt, the faithful have a continual conflict, and in this conflict their faith is often dreadfully shaken and distressed, but at length it comes forth victorious; so that they may be said to be strong even in weakness.