In that one brief sentence we have the four main terms of religious experience. "God," the object of religion, the ground of all finite existence, the basis of all our hope! "Me," the human soul, the subject of religion, the field where the work of religion is to be wrought out! "Sin," the obstacle to religion, the source of all our moral failure, the cause of our alienation from God! And "mercy," the agent of religion, the form of energy which accomplishes our recovery! God be merciful to me, a sinner. This young man of good fortune stood up in the temple in the presence of his fellows making his open confession of moral need. "Woe is me for I am undone. I am a man of unclean lips." In that very hour when this honest confession came from his lips his life was cleansed by the direct action of the divine spirit. He saw one of the winged seraphs flying towards him through the open spaces of Heaven. The angel took a live coal from the altar and laid it upon the lips of this young man. He cried out as he did it, saying, "Thine iniquity is taken away. Thy sin is purged." Isaiah was no more a man of unclean lips--he could now speak with that Lord whose name is Holy as friend speaks with friend. We have this profound moral experience dressed up in those grand, Oriental robes which were dear to the people of that region. But when you strip away the silk, the lace, and the feathers of Eastern imagery, and get down to the bare, warm truth, this is what you find--a man whose sense of moral lack had prompted that open confession, cleansed in that high hour by the direct action of the divine spirit upon his soul. Here is that which is basic and fundamental in all religious life! I wonder if we have not been tempted in recent years to obscure this vital experience. We have held those two big words, "Heredity" and "Environment," so close to our eyes as to blind us, oftentimes, to the larger vision of that which is superhuman in earthly experience. It is possible for the inner life of a man to be so wrought upon by the action of the spirit of God that the corrupt nature is cleansed, the weak nature is made strong, the selfish disposition is transformed into benign love.