God's power hasn't diminished simply because He is no longer walking around the earth in the person of Jesus of Nazareth. He is still waiting for us to request that He heal those we love. Will we choose to believe in His authority to heal? Think of one impossible situation in your life right now. Perhaps someone completely opposed to Christianity. Someone on their death bed. A relationship "without hope" of reconciliation. Is it honestly any more impossible than the centurion's servant on the point of death? Pray for the healing of Christ, both for the sake of healing but also to grow in faith that your own faith might become like that of the centurion.