Topic 17: Introduction to the Liturgy and the Sacraments
The liturgy is an “action of God” that unites us to Jesus Christ through the Holy Spirit (cf. "Sacramentum Caritatis," no. 37).
Topic 27: Morality of Human Acts
“Acting is morally good when the choices of freedom are in conformity with man’s true good and thus express the voluntary ordering of the person towards our ultimate end: God himself.”
Topic 31: The First Commandment
Christ taught that to be saved we must carry out the commandments, which express the core of the natural moral law. The first commandment is twofold: love for God and love for neighbor out of love for God.
Topic 30: Personal Sin
Personal sin is an “action, word or desire contrary to the eternal law."
Topic 29: The Person and Society
A new doctrinal outline in the "Summaries of Catholic Teaching" series. Many people have found these helpful for getting to know the Catholic faith better and explaining it to others.
Topic 28: Grace and the Virtues
Grace “is the gratuitous gift that God makes to us of his own life, infused by the Holy Spirit into our soul to heal it of sin and to sanctify it” (Catechism of the Catholic Church, 1999).
Topic 26: Freedom, Law and Conscience
God created us with the great gift of freedom. The natural law has the force of law as the voice and interpreter of the 'higher reason' of the divine Lawgiver.
Place in the Church
Opus Dei's work of spiritual formation complements the work of local churches. People who join Opus Dei or attend its activities continue to belong to their local dioceses.
Topic 25: Marriage
“God himself is the author of marriage.” The intimate conjugal union between a man and a woman is sacred, and is structured according to laws established by the Creator and independent of human choice.