It is absolutely impossible to deny that psalm singing is Biblical. David did it. Israel did it. The prophets did it. Christ & his disciples sang them. Paul and Silas sang them in prison. And Revelation leads us to believe we'll be singing Psalms in heaven. So what happened? What can explain the current state of psalmody in the church and what can remedy it?
In this simple and lucid book, John W. Keddie does a very good job answering these, and many more, questions. While it is often a dangerous thing to diagnose a problem in the church, his account of the rise of non-inspired hymnody is short, but accurate. Which describes well the whole book, Sing the Lord's Song: short and accurate.
In a scant 65 pages, Keddie answers many objections to exclusive psalmody, reveals the Biblical mandate for psalm-singing, reviews the regulative principle, surveys history and the current, temporary demise of psalmody, and finally encourages the use of psalms by reviewing a few of their many benefits. It seems to me that Keddie must have had many of the same conversations I've had - both as an opponent then as a proponent of exclusive psalm singing - because, while his book is by no means comprehensive, he gets to every objection I've ever heard leveled at those who believe God desires us to sing his psalms to him without addition or subtraction.
When promoting exclusive psalmody, I've found a few approaches to take, some better than others. One can simply expound the virtues of psalm singing (memorizing God's Word, having no doubts, whatsoever, about the material being sung, the unity of the church, etc.). Or one could start with the regulative principle and reveal through Scripture that God has never desired non-inspired hymns to be sung in his worship, thus only the psalms are appropriate. Or one could go in the back door and ask those who sing other songs in Scripture: "Where in the Bible does God allow us, commission us, or show us how to write songs to him?" Each three work, but some can be more hard-nosed than others. Keddie seems to do all three in his 65 pages.
The more I sing the songs of Christ, the more I read the Word of God, the more I am surprised and saddened that so many feel the need for something else in worship. Certainly good and doctrinally sound songs exist - but why do we need anything else in God's worship than God's songs? Even if you disagree - perhaps especially if you disagree - Keddie's book will challenge you with God's Word, rather than with man's reasoning.