“The reason the Auburn Affirmation is so important is that it constitutes a major offensive against the Word of God. It, or at least its theology, is the root of Presbyterian apostasy. The five doctrines involved are the truth of Holy Scripture, the factuality of the Virgin Birth, His miracles, His sacrifice on Calvary to satisfy divine justice and reconcile us to Christ, and His resurrection.” (Ibid.).
You can click here to read Dr. Clark's entire speech, The Auburn Heresy, which is available at the PCA History site.