The PCA's Conservative Roots

[I]t is fair to say that the southern Presbyterian conservatives who formed the PCA bore some similarities with other fundamentalists: emphasis on key doctrinal issues, such as biblical inerrancy and the exclusive nature of salvation in Jesus Christ, a demand for evangelism as the primary mission of the church, and a willingness to separate from those deemed apostate.
– SEAN MICHAEL LUCAS
Christianity and Liberalism
Click the title for a free PDF copy.
Excerpts by J. Gresham Machen:

“In trying to remove from Christianity everything that could possibly be objected to in the name of science, in trying to bribe off the enemy by those concessions which the enemy most desires, the apologist has really abandoned what he started out to defend.”
“But if any one fact is clear, on the basis of this evidence, it is that the Christian movement at its inception was not just a way of life in the modern sense, but a way of life founded upon a message. It was based, not upon mere feeling, not upon a mere program of work, but upon an account of facts. In other words it was based upon doctrine.”
Recommended Reading

For a Continuing Church: The Roots of the Presbyterian Church in America
By Sean Michael Lucas
“This is about far more than the PCA. This book is nothing less than a history of Presbyterianism in the twentieth century, with all its theological wrangling, all its political maneuvering, all its failings, and all its faithfulness. This is certainly a story worth telling, and Sean tells it very well.” – Kevin DeYoung