1 Corinthians 14:38

But if any man is ignorant, let him be ignorant. [Since Paul's words were dictated by the Spirit of God, any one filled with that Spirit would be guided to recognize his words as of divine authority, for the Spirit would not say one thing to one man and another to another. But if any man was so incorrigibly obstinate as to refuse to be enlightened by what the Spirit spoke through the apostle, there was no further appeal to be made to him (Matthew 15:14; 1 Timothy 6:3-5). Paul's test is still of force. Whoso professes to be inspired, yet contradicts what the Spirit of God has already said in the New Testament, is self-convicted. These verses mark the division between Catholics and Protestants. The former say in effect that the Spirit-filled prophets at Corinth could modify, alter, and even deny what was spoken by the Spirit-filled Paul; for they hold that the pope can change the Scriptures to suit himself. But Protestants hold that a man shows himself to be led of the Spirit of God when he assents and conforms to that which has been spoken by men of undoubted inspiration.]