We must be witnesses to the power of God! In Acts 1 Jesus said to His disciples, "After the Holy Spirit has come upon you, YOU will receive POWER and YOU will be MY WITNESSES." In law, a witness is someone who has seen or experienced an event personally; you can't be a witness if you haven't experienced the event in question. It is the same with God, you can only be a witness to the power of God if you have experienced His power personally. We need to become witnesses. Cry out to God, ask Him to reveal Himself to you. Once you have had this revelation of who Jesus is, then you can become His witness.