1 Corinthians 2:10 KJV
But God hath revealed them unto us by his Spirit: for the Spirit searcheth all things, yea, the deep things of God.
Over the centuries much damage has been done by those who have claimed to have received a special revelation of God's will. People have been swept up into error because they felt compelled to heed this new revelation given to one man or woman and therefore not verifiable. But this verse, rather than giving precedent to the practice of these special revelations, is actually an antidote for them. Paul, I believe, refers to the New Testament as that which has been revealed to us through the Spirit. No saved person need ever be held captive to those who claim these special revelations because we have God's revealed Word in the Bible and illuminated in our hearts through the Holy Spirit.
The only Christian ever held hostage to error is that Christian who will not search the Scriptures. The Bible, rightly divided, always frees its subjects.