This leads him to his key point: «Let us make no mistake; the data we now have at hand should serve as a
dire warning: Unless we act decisively, many of today's converts will be one - generation Jews — Jews with non-Jewish parents and non-Jewish children,» But Sarna concludes on a note that most Jews would find more hopeful: «Learned Jews and non-Jews have been making
dire predictions about the future (or end) of the Jewish people for literally thousands of years — long
before William Wirt and long after him — and, as we have seen, their
predictions have proved consistently wrong.