When we told you about the powerful coming of our Lord Jesus Christ, we were not telling just smart stories that someone invented. But we saw the greatness of Jesus with our own eyes.
Jesus heard the voice of God, the Greatest Glory, when he received honor and glory from God the Father. The voice said, "This is my Son, whom I love, and I am very pleased with him."
We heard that voice from heaven while we were with Jesus on the holy mountain.