When but a lad my old pastor used one night an illustration from which I never have been able to get away. It was the story of the old fisherman who took his little boy with him to fish and found that on his accustomed fishing grounds he was unsuccessful; so, leaving the boy upon the little island, he started away to fish alone. The mists came down in his absence and, missing his way, he lost his boy. He rowed everywhere calling him and at last he heard him in the distance, saying, "I am up here, papa; over this way." The fisherman found him, but not quickly enough to enable him to escape the cold night winds, and the boy sickened and died. The old fisherman said: "Every night when I stood at my window I could see his outstretching hands and always above the storm I could hear his voice calling me upward. I could not but be a Christian." My mother had just a few weeks before gone home to God, and I heard her voice as plainly as I could hear the voice of my friend at my side. Every vision of a mother in heaven, of a child in the skies, is a call of God. He seeks to persuade us by calamities. The Chicago theater horror, with its hundreds of women and children dead and disfigured, was God's call to a great city and to the world. This is the striving of the Spirit. Not with audible voice does he speak to us but by means of impressions and convictions. Let us not think for a moment that these come simply because the preacher has influence and may possibly be possessed of a certain kind of genius or power. These are God's warnings to us. Be careful, therefore, how you resist them. Jesus said in John the sixteenth chapter the seventh to the eleventh verses, "Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you. And when he is come, he will reprove the world of sin, and of righteousness and of judgment. Of sin, because they believe not on me; of righteousness, because I go to my Father, and ye see me no more; of judgment, because the prince of this world is judged." The word "_reprove_" is a judicial word. When the judge has heard the testimony for or against the criminal and the arguments of the counsel, he himself sums up the case and lays it before the jury, bringing out the strong points or the weak ones in relation to the criminal. This is reproving, and it is this that the Spirit does. He brings before us Jesus Christ and then presents unto God our treatment of him, and so it is easy to understand how the text could be true. "My spirit shall not always strive with men." 2. How may we know that he is striving? There are very many ways.