12 and Abraham and Sarah 'are' aged, entering into days—the way of women hath ceased to be to Sarah; 13 and Sarah laugheth in her heart, saying, 'After I have waxed old I have had pleasure!—my lord also 'is' old!' 14 And Jehovah saith unto Abraham, 'Why 'is' this? Sarah hath laughed, saying, Is it true really—I bear—and I am aged? Is any thing too wonderful for Jehovah? at the appointed time I return unto thee, about the time of life, and Sarah hath a son.' 15 And Sarah denieth, saying, 'I did not laugh;' for she hath been afraid; and He saith, 'Nay, but thou didst laugh.'
Matthew Henry's Commentary on Genesis 18:12-15
Commentary on Genesis 18:9-15
(Read Genesis 18:9-15)
Where is Sarah thy wife? was asked. Note the answer, In the tent. Just at hand, in her proper place, occupied in her household concerns. There is nothing got by gadding. Those are most likely to receive comfort from God and his promises, who are in their proper place, and in the way of their duty, 17; but He who searches the heart, saw that the one sprung from unbelief, and the other from faith. She denied that she had laughed. One sin commonly brings in another, and it is not likely we shall strictly keep to truth, when we question the Divine truth. But whom the Lord loves he will rebuke, convict, silence, and bring to repentance, and if they sin before him.