1 Peter 1:23 says that you and I are born again of an incorruptible seed by the Word of God.  John 1:14 tells us that Jesus, the Word of God, became flesh. What does that mean for you and me? That means His Word is actually He Himself being released into the atmosphere around us. When we speak His words, He is present to heal in our midst. Luke 5:17 and many other scriptures let us know that as His words are being spoken, He is filling our midst with His presence!