Therefore write down the things you have seen, and the things that are, and the things that will happen after this. — Revelation 1:19

Write what you have seen, what is, and what will be. That's John's commission—and it's the shape of Christian testimony. Holy men spoke as they were carried along by the Holy Spirit. What we've seen and heard we proclaim to you. Jesus proving His resurrection with the wounds in His hands and feet.