This first section of chapter 3 introduces Holy Scripture as the Word of God. There are two main foci: the relationship between revelation and the Scriptures, and the unity between the Old and New Testaments.

The part of Chapter 1 presented here introduces the function and nature of church dogmas or doctrines. It naturally involves a discussion of the relationship between the authority of Scripture and the tradition of the church. In the Reformed tradition Scripture functions as the highest norm. The authors emphasizes the ecclesiastical and confessional character of dogmas.