Judaism is one of the oldest religions in history. It is mainly popular in Israel, where in 2010 there was an estimated 5,703,700 Jews who form 42.5% of the worlds Jews. In the Jewish religion, they believe in one God and follow the ten commandments. They believe that the time will come when God will send the messiah, who will be either a force or a person. The messiah will make the world perfect, and everyone will live in peace, understanding and happiness. As in any religion, practices and rituals are very important in Judaism. One of their main rituals is Bar mitzvah.