These are some of the 40 or so topics that don't even mention Opus Dei on their own site.

The Existence of God: Can we know that God exists by reason alone? What are some of the main pathways for reaching God's existence. Can conscience and human freedom be paths to a personal God who loves us? These are some of the questions discussed in this summary of Catholic teaching.

Revelation: God wished to manifest himself as a personal Being through the history of salvation. He raised up and guided a people to be the custodian of his revealed word. Through that people he prepared the world for the Incarnation of his Word, Jesus Christ.

Elevation to the Supernatural Order and Original Sin: In creating the first man and woman, God constituted them in a state of holiness and justice. He also granted them the possibility of sharing in his divine life through the proper use of their freedom.