<b>These are the generations of Isaac, Abraham’s son: Abraham begot Isaac (Gen. 25:19).</b> Why does Scripture repeat itself by adding: <i>Abraham begot Isaac</i>? There were some men who whispered among themselves: “It is impossible that this centenarian and this woman of ninety gave birth to a son. This cannot be her offspring, she must have purchased him in the marketplace.” Hence, you find that when Isaac was weaned, Abraham arranged a banquet to which he invited the influential men of the government, while Sarah invited their wives. What did the women do? They said to each other: “Now we shall be able to prove whether or not he is actually her son.” Each of them brought her own son along but neglected to bring the child’s nurse. Soon, the children began to cry and the mothers exclaimed: “I have forgotten to bring the child’s nurse.” Whereupon, milk began to flow from Sarah’s breast, and she took the children and nursed them, as it is said: <i>That Sarah should give children suck</i> (Gen. 21:7). Then they all proclaimed: “In truth, Sarah gives children suck.” Hence it is said: <i>Abraham begot Isaac</i>.