Why? The Jewish People

G-d Created the Jewish people and Israel so the world could see there is a G-d. Isaiah 45:4-6 "For Jacob my servant's sake,and Israel mine elect, I have even called thee by thy name: I have surnamed thee, though thou hast not known me. I am the L-RD, and there is none else,there is no G-d beside me: I girded thee, though thou hast not known me: That they may know from the rising of the sun, and from the west, that there is none beside me. I am the L-RD, and there is none else."