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. Nay; but thou didst laugh. The angel does not contend in a multiplicity of words, but directly refutes her false denial of the fact. We may hence learn, that we gain no advantage by tergiversation, when the Lord reproves us, because he will immediately dispatch our case with a single word. Therefore, we must beware lest we imitate the petulance of those who mock God with false pretences, and at length rush into gross contempt of Him. However he may seem to leave us unnoticed for a time, yet he will fulminate against us with that terrible voice, It is not as you pretend.' In short, it is not enough that the judgment of God should be reverenced, unless we also confess our sins ingenuously and without shifts or evasions. For a double condemnation awaits those who, from a desire to escape the judgment of God, retake themselves to the refuge of dissimulation. We must, therefore bring a sincere confession, that, as persons openly condemned, we may obtain pardon. But seeing that God was contented with giving a friendly reprehension, and that he did not more severely punish the double offense of Sarah; we hence perceive with what tender indulgence he sometimes regards his own people. Zacharias was more severely treated, who was struck dumb for nine months. (Luke 1:9.) But it is not for us to prescribe a perpetual law to God; who, as he generally binds his own people to repentance by punishments, often sees it good to humble them sufficiently, without inflicting any chastisement. In Sarah, truly, he gives a singular instance of his compassion; because he freely forgives her all, and still chooses that she should remain the mother of the Church. In the meantime, we must observe, how much better it is that we should be brought before him as guilty, and that like convicted persons we should be silent, than that we should delight ourselves in sin, as a great part of the world is accustomed to do.

Then Sarah denied, saying, I laughed not,.... Some render the words, "Sarah lied" (z); and indeed it was no other than a lie, to say she did not laugh when she did; which she might be tempted to say in her confusion, partly because the back of the speaker was to her, and he could not see her, and partly because it was inward, and very little at least discoverable in her countenance:
for she was afraid; of the reproof of her husband; and of the charge of ill manners to a stranger; and especially as she had reason to believe that it was the Lord himself that had spoken these words, and therefore could gladly have excused herself, and wiped off the reproach:
and he said, nay, but thou didst laugh; it is not true what thou sayest, for thou didst certainly laugh; this he knew, being the omniscient God, notwithstanding, as he appeared as a man, his back was to her, and though her laughter was more internal than external.
(z) "mentita est", Drusius.