"If it be asked, then, by what things chiefly the Christian religion has a standing amongst us, and maintains its truth, it will be found that the following two not only occupy the principal place, but comprehend under them all the other parts, and consequently the whole substance of Christianity, viz., a knowledge first, of the right way to worship God; and secondly of the source from which salvation is to be sought. When these are kept out of view, though we may glory in the name of Christians, our profession is empty and vain."

- John Calvin as cited in War Against the Idols (book on sale at http://www.swrb.com/catalog/e.htm), p. 198 (emphases added). Carlos Eire is citing from Calvin's On the Necessity of Reforming the Church, which is FREE ONLINE at: http://www.swrb.com/newslett/actualnls/NRC_ch00.htm.

Biblical Worship by Kevin Reed (Written with a clear view of upholding the biblical tradition of Reformation worship -- with the life and death struggle that was a backdrop to the Reformers war against the idols clearly in mind. Touches on a number of controversial issues that have arisen as human innovations in worship have become commonplace in contemporary church life -- even among those that still fancy being known as Reformed.)

Foundation For Reformation: The Regulative Principle Of Worship - Greg L. Price
Free at: http://www.swrb.com/newslett/actualnls/REFORMATION-RPW-GP.htm

Regulative Principle of Worship in the New Testament by Greg Price (Puritan Worship series)
- FREE MP3 or VIDEO at: http://www.sermonaudio.com/sermoninfo.asp?currSection=sermonssource&sermonID=380119184

Regulative Principle of Worship in the Old Testament by Greg Price (Puritan Worship series)
- FREE MP3 or VIDEO at: http://www.sermonaudio.com/sermoninfo.asp?currSection=sermonssource&sermonID=380103046

Presbyterian Worship: Old and New by Kevin Reed (A Review and Commentary upon Worship in Spirit and Truth, a book by John Frame. Reed shows how Frame has abandoned the Reformation, both scripturally and confessionally, in regard to worship. He also gives an excellent summary of historic Reformed views and then contrasts them with the novel ideas now being touted by Frame.)

Introductory Essay to John Knox's True and False Worship by Kevin Reed

The Regulative Principle of Worship and Christmas by Brian Schwertley
FREE ebook at: http://www.swrb.com/newslett/actualnls/CHRISTMAS.htm

Family Worship by Kerry Ptacek (A number of citations from historic Reformed folk [John Knox, Matthew Henry, Jonathan Edwards, etc.] covering the period from 100 AD to 1912 AD regarding family worship.)

The Necessity of Reforming the Church (1543) by John Calvin

Of Uniformity In Religion, Worship of God, and Church Government by George Gillespie

Instrumental Music in Public Worship: The Views of John Calvin by John Calvin & John Girardeau

A Warning Against the False and Dangerous Views of James Jordan Concerning Worship: A Book Review of Kevin Reed's Canterbury Tales by Reg Barrow

The Canterbury Tales by Kevin Reed
(Refutes James Jordan and others who reject the regulative principle of worship.)

Instrumental Music in Public Worship: The History Surrounding the Westminster Assembly by John Girardeau

Doug Wilson's Five Questions on the Regulative Principle of Worship Answered by Reg Barrow

Gradual Reformation Intolerable: A Brief Inquiry into the Actions of Luther and the Writings of Calvin in Reforming the Church Against False Worship by Dr. C. Matthew McMahon
Free at: http://tinyurl.com/y60i or at http://www.apuritansmind.com/Reformation/McMahonGradualReformationIntolerable.htm

Mel Gibson's Vivid, Blasphemous and Idolatrous Deception: The Passion of the Christ Movie by Richard Bennett

Pictures of Christ and Idolatry by Greg Price (Defends the position of the Protestant Reformation against the use of pictures and images of Christ, in opposition to Roman Catholicism and the first century Gnostics.)
FREE MP3 AUDIO at: http://www.sermonaudio.com/sermoninfo.asp?sermonid=32401164443