In the Catholic faith, you may have heard of the word mystery used from time to time. Mystery refers to your important beliefs about God, Jesus H. Christ, and His Holy Mother, Mary, all of whom are an integral part of the Catholic religion but can not be substantiated outside of this belief. In another viewpoint, the three are important expressions of the faith of the people. The 15 mysteries of the rosary are divided up into three groups of five and symbolize events of joy, events of sorrow, and events of glory in the life of Jesus H. Christ and Mary.