It is here prayer has its mightiest reflex power. It gives a vital sense of God and of spiritual realities. It lifts the life above the control of lower motives to a loftier moral elevation, with a purer atmosphere and a broader horizon. The whole man is elevated, ennobled, transfused with Divine life, as he holds communion with God. When Moses had been with God in the mount, his face shone with a glory such that Israel could not steadfastly look on it. It was when Jesus was praying that he was transfigured, "and His face did shine as the sun, and His raiment was white as the light" (Matt. xvii. 2). God imprints His own image on the soul that comes face to face with Him. The inner life of a preacher always stands revealed in the pulpit; it transfuses itself through his preaching. No mere declamation, no arts of rhetoric, no dramatic simulation of emotion, can conceal the absence of spiritual life. Moral earnestness can never be assumed; it is the attribute only of a soul profoundly feeling the power and reality of Divine truth. The man, therefore, who would speak God's Word with the pungency and fervor of a Bunyan, a Baxter, a Flavel, or a Payson must, like them, be constant and fervent in prayer. The springs of spiritual life opened in the closet will pour forth never-failing streams of life in the pulpit. Luther said: "Prayer, meditation, and temptation make a minister." He himself is said to have spent three hours daily in prayer, and those mighty words which thrilled the heart of Christendom were the utterances of a soul thus glowing with the flames of devotion. 2. _The relation of secret prayer to the apprehension of spiritual truth._