Commentary on Genesis John Calvin
JOHN CALVIN
that she did wrong to God, by not acknowledging the greatness of his power. And truly, we also attempt to rob God of his power, whenever we distrust his word. At the first sight, Paul seems to give cold praise to the faith of Abraham, in saying, that he did not consider his body, now dead, but gave glory to God, because he was persuaded that he could fulfill what he had promised. (Romans 4:19.) But if we thoroughly investigate the source of distrust, we shall find that the reason why we doubt of God's promises is, because we sinfully detract from his power. For as soon as any extraordinary difficulty occurs, then, whatever God has promised, seems to us fabulous; yea, the moment he speaks, the perverse thought insinuates itself, How will he fulfill what he promises? Being bound down, and preoccupied by such narrow thoughts, we exclude his power, the knowledge of which is better to us than a thousand worlds. In short, he who does not expect more from God than he is able to comprehend in the scanty measure of his own reason, does him grievous wrong. Meanwhile, the word of the Lord ought to be inseparably joined with his power; for nothing is more preposterous, than to inquire what God can do, to the setting aside of his declared will. In this way the Papists plunge themselves into a profound labyrinth, when they dispute concerning the absolute power of God. Therefore, unless we are willing to be involved in absurd dotings, it is necessary that the word should precede us like a lamp; so that his power and his will may be conjoined by an inseparable bond. This rule the Apostle prescribes to us, when he says,
'Being certainly persuaded, that what he has promised, he is able to perform,' (Romans 4:21.)
The angel again repeats the promise that he would come 'according to the time of life,' that is, in the revolving of the year, when the full time of bringing forth should have arrived.
15. Then Sarah denied. Another sin of Sarah's was, that she endeavored to cover and hide her laughter by a falsehood. Yet this excuse did not proceed from obstinate wickedness, according to the manner in which hypocrites are wont to snatch at subterfuges, so that they remain like themselves, even to the end. Sarah's feelings were of a different kind; for while she repents of her own folly, she is yet so terrified, as to deny that she had done, what she now perceives to be displeasing to God. Whence we infer, how great is the corruption of our nature, which causes even the fear of God, — the highest of all virtues, — to degenerate into a fault. Moreover, we must observe whence that fear, of which Moses makes mention, suddenly entered the mind of Sarah; namely, from the consideration that God had detected her secret sin. We see, therefore, how the majesty of God, when it is seriously felt by us, shakes us out of our insensibility. We are more especially constrained to feel thus, when God ascends his tribunal, and brings our sins to light.