Topic 30: Personal Sin
Personal sin is an “action, word or desire contrary to the eternal law."
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 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 10: Passion and Death on the Cross
Christ died for our sins, to free us from them and redeem us from the slavery that sin introduced into mankind’s life.
Topic 23: Penance (II)
Priests receive from God the power to forgive sins in the name of the Father and of the Son and of the Holy Spirit.
Topic 20: The Eucharist (II)
The Holy Mass is a true sacrifice because it makes present, in the “today” of the Church’s liturgical celebration, the unique sacrifice of our redemption carried out on the Cross.
Topic 14: History of the Church
The Church continues to make Christ present in human history. In the history of the Church, we find the divine and the human closely intertwined.
Topic 19: The Eucharist (I)
The Eucharist is the memorial of Christ’s Paschal mystery, making present his unique sacrifice in the liturgy of the Church.
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.