Catechism of the Catholic Church §90 — excerpt
The mutual connections between dogmas, and their coherence, can be found in the whole of the Revelation of the mystery of Christ. "In Catholic doctrine there exists an order or hierarchy 234 of truths, since they vary in their relation to the foundation of the Christian faith."
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.
Whole chapters cited: Luke 25
Also cites: Vatican Council I: DS 3016: nexus mysteriorum · UR II