“[T]hat which the Apostles teach is. . . the inspired Word of God before all other things. No theologian would dare say of his work what Paul said to the Galatians; ‘But though we or an angel from heaven preach any gospel other than that which we preached unto you, let him be anathema’ (1:8).” (Geerhardus Vos, Redemptive History and Biblical Interpretation, p. 21).
“As God is the author of the gospel, so gospel authority is never inherent but always derived. It is only as the messenger remains faithful to the divine message that he speaks with divine authority.” (Geoffrey B. Wilson, Galatians: A Digest of Reformed Comment, p. 21).
“And not only is the truth more than the highest ranking minister of God, but as the gospel — which constitutes the norm of the divine redemption in the world — it is so holy that anyone who independently modifies it brings the curse of God down upon his head.” (Herman Ridderbos, The Epistle of Paul to the Churches of Galatia, p. 50).
“We must trust Christ for nothing or for all; to trust Him only for part is the essence of unbelief. There are two ways of being saved, according to the Apostle Paul. One way is to keep the law of God perfectly. That way is closed because of sin. The other way is to accept the gift of salvation which Christ offers us freely by His cross.” (J. Gresham Machen, Machen’s Notes on Galatians, p. 53).
From the Reflection for Trinity Presbyterian Church of the OPC