When Jews were exiled from their land, I am sure that many contemporaries thought that, "This is the end of them." When they were enslaved en masse, converted, and killed in Spain, in the VII century, the contemporaries thought that that certainly had to be the end. But, miraculously, despite the decimation, as a people the Jews survived. The expulsion from Spain in 1492 was tragic, the centuries of Inquisition and auto-da-fe --- all of these colossal losses were about to bring an end to the Jewish people. The Holocaust tragedy seamed final, too, as well as the attack on Israel by five Arab nations on the first day of its existence. Yet at all these turns, no matter how close the peril seamed to be, miraculously, the Jewish people survived.
I have faith in the future.