he Catholic church is the world's largest church, with more than one billion members. The mission of St. Aloysius Catholic Church is to spread the Gospel of Jesus Christ, administering the sacraments, and exercising charity. In all rites, mass is the center of Catholic worship. An important belief of Catholic churches is that at each Mass, the bread and wine become the body and blood of Christ by the words of consecration spoken by the priest. The Catholic church also believes that there is one true God who exists as a mutual indwelling of three persons - God the Father, God the Son, and the Holy Spirit.