Jesus did not change sick people into well people. He understood that in reality no one has ever been unwell in any way.
How did Jesus’ spiritual understanding cause the corporeal senses to give up their false testimony of sin, disease, and death? In the Christian Science textbook, Mary Baker Eddy gives this explanation: “Jesus beheld in Science the perfect man, who appeared to him where sinning mortal man appears to mortals. In this perfect man the Saviour saw God’s own likeness, and this correct view of man healed the sick” (Science and Health with Key to the Scriptures, pp. 476–477).
Jesus perceived, through spiritual sense, what God knows of the man of His own creating, right where others—who believed that the corporeal senses depicted reality—erroneously saw a sick, sinful, or dying material man. Jesus trusted that God was always keeping everyone perfectly well, because everyone lives in God under His loving and omnipotent care. As the psalmist wrote, “Whither shall I go from thy spirit? or whither shall I flee from thy presence? If I ascend up into heaven, thou art there: if I make my bed in hell, behold, thou art there. If I take the wings of the morning, and dwell in the uttermost parts of the sea; even there shall thy hand lead me, and thy right hand shall hold me” (Psalms 139:7–10).
