Act of Faith

O MY GOD, I firmly believe that Thou art one God in Three Divine Persons, Father, Son and Holy Ghost. I believe that Thy Divine Son became Man, and died for our sins, and that He will come to judge the living and the dead. I believe these and all the truths which the Holy Catholic Church teaches, because Thou hast revealed them, Who canst neither deceive nor be deceived.

(in slightly dated diction, via TRADITIONAL CATHOLIC PRAYERS)