The theme of testimony and witness of Revelation is God is Sovereign. He is greater than any power in the universe. This is a book of hope. He was, is, and always will be. Jesus, His son, is witness to the fact. He walked among us, he died and rose again. He knows the Father. He is the Father. This gives us hope. Jesus freed us from all of our sins. We are afraid to be witness because we are persecuted! No prayer in schools, no Bibles, wanting the 10 Commandments out of the courthouses while still swearing or affirming on the Bible. No we are persecuted. But we are afraid to witness because of what people will think of us or what they will say. The only one we should be concerned about is our Father in Heaven. "Faith without works is dead.." according to James and so it is. God will judge us.