Judaism isn't a race or even a particular culture or ethnic group. There are about 13 or 14 million Jews spread around the world, including about 6 million in the United States and about 5 million in Israel - so Judaism clearly isn't "a nation." So what does it mean to be Jewish? Here are the basics: Being Jewish (being "a Jew ") means you're a Member of the Tribe (an M-O-T). The tribe started with a couple named Abraham and Sarah about 4,000 years...