I understand your concern about God's warning of changing scripture.However, the word sequel here, I believe, is a new revelation not yet written.In other words, a prophecy yet to be fulfilled.Now you might believe like some, that there are no more prophecies after the bible.Yet, God said he would give the church prophets, apostles, teachers evangelists etc.So we shouldn't exclude the ones we don't like or make us feel uncomfortable.After all, don't most of us here come to hear the latest?God does speak to his children, in dreams and visions and words of knowledge.Are they all from God?No, but then we need to exercise discernment.So it is ok to questionBut we have to be careful not to ignore a clear warningAnd we have plenty of them here.