Genesis 25:19 - Clarke's commentary and critical notes on the Bible

And these are the generations of Isaac, Abraham's son: Abraham begat Isaac: These are the generations of Isaac - This is the history of Isaac and his family. Here the sixth section of the law begins, called תולדת יעחק toledoth yitschak; as the fifth, called חיי שרה chaiye Sarah, which begins with Genesis 23, ends at the preceding verse.