Islam, Judaism, and Christianity are all monotheistic religions whose followers worship the same God. Muhammad founded Islam, Moses founded Judaism, and Jesus founded Christianity. Judaism was the first monotheistic religion, then Christianity followed after. Jesus was a Jew and the people who believed that Jesus was the son of God became the Christians. Muhammad was the last prophet and created Islam. Muhammad taught his followers that all people who worshiped one God are equal. Abraham was the person who started the practice of monotheism. All three of these religions developed from his idea.