20 January, 2011

Aquinas: Scripture is the Measure of Faith

"It should be noted that though many might write concerning Catholic truth, there is this difference: that those who wrote the canonical Scripture, the Evangelists and Apostles, and others of this kind, so constantly assert it that they leave no room for doubt. That is his meaning when he says ‘we know his testimony is true.’ Galatians 1:9, “If anyone preach a gospel to you other than that which you have received, let him be anathema!” The reason is that only canonical Scripture is a measure of faith. Others, however, so wrote of the truth that they should not be believed save insofar as they say true things."

Thomas Aquinas, Lectures on the Gospel of John, ed. P. Raphaelis Cai, O.P., Editio V revisa (Romae: Marietti Editori Ltd., 1952) n. 2656, p. 488.

It would be anachronistic to label Aquinas a Lutheran, but by the same token, it certainly seems anachronistic to call him a Roman Catholic, if this was his view of . Thomas is clear: only canonical scripture is a measure of faith, and all other writers are to be believed only if they agree with scripture.
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