A neglected line of evidence for the fourth gospel's authorship is how closely John 19:35, 20:31, and 21:24 align with what Jesus said about the guidance of the Holy Spirit, the work of the apostles, and other issues in John 14-17. What the author of the document says in the passages I cited from John 19-21 seems to allude to Jesus' earlier comments in chapters 14-17. The implication is that the author of the fourth gospel is fulfilling what Jesus predicted. He's suggesting that he's one of the apostles Jesus was addressing in chapters 14-17.
