As the outward man is not fit for work for any length of time unless he eats, so is with the inner man. What is the food for the inner man? Not prayer, but the Word of God-not the simple reading of the Word of God, so that it only passes through our minds, just as water runs through a pipe. No, we must consider what we read, ponder over it, and apply it to our hearts.
―George Muller, The Autobiography of George Muller