What is the Glory? The Glory of God is all that God has, all that God is and all that God does is equal to the Glory of God.
In the Old Testament, we find that there was always a specific call to people to become a prophet of God, but in the New Testament because of the work of the Cross because of the grace of our Lord Jesus Christ, everyone is called to be a prophet. Everyone becomes a prophet, priest and a king.
If you want to know the power of the Cross then you must ask God to open your eyes to Romans 6th chapter.