Islam saved Jewry. This is an unpopular, discomforting claim in the modern world. But it is a historical truth. The argument for it is double. First, in 570 CE, when the Prophet Mohammad was born, the Jews and Judaism were on the way to oblivion. And second, the coming of Islam saved them, providing a new context in which they not only survived, but flourished, laying foundations for subsequent Jewish cultural prosperity - also in Christendom - through the medieval period into the modern world.