Program terms and definitions, with audio.
marks of the Church There are four marks of the Church. The Church is one, holy, catholic, and apostolic. These marks, or characteristics, are signs to the world that God's reign is already present, though incomplete.
miracles The miracles of Jesus are signs and wonders of the divine power that help you see the presence of the kingdom of God.
missionary A missionary is a person who answers a call from God to devote a period of his or her life to bringing Christ's message to people who do not know it.
mortal sin Mortal sin is the most serious form of personal sin, through which a person turns completely away from God.
mystery A mystery is a truth of faith that you cannot fully understand but that you believe because God has shown it to people in Scripture, in the life of Jesus, or in the teachings of the Church.