This document's purpose is to spell out the Church's understanding of the nature of revelation--the process whereby God communicates with human beings. It touches upon questions about Scripture, tradition, and the teaching authority of the Church. The major concern of the document is to proclaim a Catholic understanding of the Bible as the "word of God." Key elements include: Trinitarian structure, roles of apostles and bishops, and biblical reading in a historical context.

Theologian Harry Lee Poe and chemist Jimmy H. Davis argue that God's interaction with our world is a possibility affirmed equally by the Bible and the contemporary scientific record. Rather than confirming that the cosmos is closed to the actions of the divine, advancing scientific knowledge seems to indicate that the nature of the universe is actually open to the unique type of divine activity portrayed in the Bible.