Chapter 1 is an exposition of Heidelberg Catechism Lord’s Day 21, Q&A 54. The authors seek to understand from the Catechism what the relationship between the church and the world is in worship. Should the aim of the church be to make worship accessible to the world? Should worship be one occasion where the church displays her otherworldliness?
The use of the term "saints" for believers is new in the New Testament; in the Old Testament, it was very rarely used. In the New Testament it is a term applied to men and not angels or heavenly beings. In this essay, the author reflects on this development. Particular attention is given to the book of Daniel.