They didn't? So Galatians 2 shouldn't be in the Bible? Specifically:
*Now when Peter had come to Antioch, I withstood him to his face, because he was to be blamed; - Galatians 2:11
http://www.biblegateway.com/passage/?search=Galatians2:11&version=NKJV
"I withstood him to his face, for he was to be blamed". Pretty harsh, considering Peter is one of the twelve.
*Then after fourteen years I went up again to Jerusalem with Barnabas, and also took Titus with me. *And I went up by revelation, and communicated to them that gospel which I preach among the Gentiles, but privately to those who were of reputation, lest by any means I might run, or had run, in vain. - Galatians 2:1-2
http://www.biblegateway.com/passage/?search=Galatians2:1-2&version=NKJV
Why the secrecy? Do you know?
You should listen to the Galatians Bible study by Pastor Enyart.