The Star of David is a symbol that represents the Jewish faith in the same way a cross is a symbol for Christianity. The symbol gained importance mostly during modern times, and it is now widely seen as a symbol of Judiasm.
Also known as the Magen David, or Shield of David, the Star of David is a six-pointed star that, according to legend, the hero king David carried an image of on his shield. It is also thought that his shield may have been built in the shape of the star. The origins of the shape are likely not strictly related to the Jewish faith, and ancient Jewish artifacts are highly unlikely to contain this symbol. Unfortunately, one of the main reasons the Star of David is associated with Judiasm is because Jewish people in Germany and other parts of Nazi-controlled Europe were forced to wear a patch in the shape of the star during the Holocaust.