In a note on Matt. 1, 17 in the January number of this Review, I remarked that to squeeze the fourteen generations from Abraham to David into a period of four hundred and ninety years it was necessary to ignore the biblical chronology, which demands nearly twice as long. Professor Louis Ginzberg has suggested another possible explanation. In Yebamot 64b, Rabbah (b. Abuha), a Babylonian teacher of the third century, observes that it was in the days of David that the years of a man's life were first reduced to seventy (Psalm 90, 10). This inference from the Psalm might have been drawn at any time; and if it was current in the circle from which the genealogy of Jesus in Matthew comes, the author may not have applied his thirty-five year scheme to the generations before David.