Paul was human. I am going to assume you are human. Have you ever said something in error, while still being convinced you were right? Paul is talking about things that he can only guess at, aka talking out of one's ass. He is trying to give the christians he was writing to a "feelgood" speech. "We sure are special, don't you feel special? God chose us in particular to go through the absolute garbage that we're about to, or are in the process of, going through." People put too much emphasis on the various writers of the various books of the bible. Spiritually inspired, sure. God did not take over their bodies to write the various books. So you have their interpretation of what God wanted them to say. Then, in this instance, I believe the writing was in Greek. (correct me if I'm wrong) This was translated a few hundred years later into latin, then a few hundred years later into (wasn't gutenberg german?). Then to English. That's why I try not to put major doctrinal emphasis on individual words, if at all possible.