Augustine of Hippo
From Abraham alone, within a span of just over four centuries, the population of the Jewish people grew tremendously. By the time they exited Egypt, there were six hundred thousand men capable of bearing arms. Furthermore, if we exclude the Idumeans, who are not part of the true nation of Israel and are descended from Abraham's brother Esau, as well as other tribes that descended from Abraham's lineage but were not born of his wife Sarah, the significance of this growth remains profound.