John Calvin's Commentary on the Bible - Genesis 21:1
Verse 1 1.And the Lord visited Sarah. In this chapters not only is the nativity of Isaac related, but because, in his very birth, God has set before us a lively picture of his Church, Moses also gives a particular account of this matter. And first, he says that God visited Sarah, as he had promised. Because all offspring, flows from the kindness of God, as it is in the psalm, ‘The fruit of the womb is the gift of God;’ (Psalms 127:3;) therefore the Lord is said, not without reason, to visit... read more
Adam Clarke's Commentary on the Bible - Genesis 21:6
God hath made me to laugh - Sarah alludes here to the circumstance mentioned Genesis 18:12 ; and as she seems to use the word to laugh in this place, not in the sense of being incredulous but to express such pleasure or happiness as almost suspends the reasoning faculty for a time, it justifies the observation on the above-named verse. See a similar case in Luke 24:41 , where the disciples were so overcome with the good news of our Lord's resurrection, that it is said, They believed not... read more