For even in worldly things, singleness of eye is a great help towards a sound conclusion. "To the upright there ariseth light in the darkness." And if this rule hold true in the worldly sphere, much more in the moral and spiritual. It is when you have the profoundest desire to do what is right that you are in the best way to know what is wise. In the service of God you are grievously liable to be distracted by private feelings and interests of your own. It is when these private interests assert themselves that you are most liable to lose the clear line of duty and of wisdom. You wish to do God's will, but at the same time you are very unwilling to sacrifice this interest, or expose yourself to that trouble. Thus your own feeling becomes a screen that dims your vision, and prevents you from seeing the path of duty and wisdom alike. You have not a clear sight of the right path. You live in an atmosphere of perplexity; whereas men of more single purpose, and more regardless of their own interests, see clearly and act wisely. Was there anything more remarkable in the Apostle Paul than the clearness of his vision, the decisive yet admirable way in which he solved perplexing questions, and the high practical wisdom that guided him throughout? And is not this to be connected with his singleness of eye, his utter disregard of personal interests in his public life--his entire devotion to the will and to the service of his Master? From that memorable hour on the way to Damascus, when he put the question, "Lord, what wilt Thou have me to do?" onward to the day when he laid his head on the block in imperial Rome, the one interest of his heart, the one thought of his mind, was to do the will of Christ. Never was an eye more single, and never was a body more full of light.