Contains one of the best explanations of the Scriptural law of worship (also known as the regulative principle of worship) in print today. For this and a number of other reasons this was one of the most significant books published in the 20th century concerning worship! Furthermore, it demonstrates and defends (from Scripture, history and the creeds) the Reformation practice of exclusive Psalmody. It dovetails splendidly with Eire's celebrated War Against the Idols, setting forth foundational principles that lay at the very heart of Reformation thought, theology and practice. For as Bushell points out, "Purity of worship and uniformity of worship go hand in hand because they are both founded upon the assumption that the Scriptures contain clear, sufficient and authoritative directions as to the proper way of worshiping God. The diversity of worship practice that we see in our churches arises ultimately from a denial of this assumption, and it constitutes, therefore, a denial of a central aspect of the doctrine of the sufficiency of Scripture. There is much more at stake, then, in this whole discussion than the mere observance or non-observance of a few external rites" (2nd edition, 1993, p. 3). If you are a Calvinist and have not read this book, you are missing a real treat!