CCC 90

The mutual connections between dogmas, and their coherence, can be found in the whole of the Revelation of the mystery of Christ.⁵¹ Cf. Vatican Council I: DS 3016DS — Denzinger–Schönmetzer (Enchiridion Symbolorum): nexus mysteriorum; LC 25. "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."⁵² URUR — Unitatis Redintegratio (Vatican II, Decree on Ecumenism) II.