4. "And he that doubteth is damned if he eat, because he eateth not of faith: for whatsoever is not of faith is sin" (Romans 14:23). Active doubt is sin. If you have a doubt concerning the sinfulness of certain things, then to do those things is sin. If I have the least doubt concerning the amusements which may be questionable, or the position which may be doubtful, so long as a doubt or a question remains these things are sin; and the Bible states the fact that "The wicked shall not be unpunished." 5. "And when he is come, he will reprove the world of sin, and of righteousness, and of judgment" (John 16:8). Unbelief is the chiefest of sins. It is to reject Jesus Christ, it is to close in our own faces the door of hope, it is to trample the blood of the Son of God under our feet, and it means also to insult the spirit of grace. One morning in the city of New York a man dashed down the street and past three men standing on the pier. They could not tell how old he was, nor how he was dressed, but they saw him jump upon the bulkhead near by, strip off his overcoat, coat and hat, and, before they could stir to save him, plunge off the end of the pier. There was a short rope lying near by, and seizing this a man ran with his companions to the point from which the man had jumped. They threw the rope toward the struggling figure that they could just make out below them. The rope fell a foot and a half too short. Then they ran back to the gas plant and got a longer rope. The ice was running so thick in the river that the man's head and shoulders were still to be seen above the water when they returned. Taking careful aim they threw the rope squarely across the struggling form, shouting, "Catch it and we'll pull you in." The unknown man, however, making a last effort, threw the rope aside and shouted back: "Oh, to h--- with it! I'm through!" Then he sank out of sight. That is a picture of the man who, having offered to him mercy and grace in Jesus Christ, spurns all that God offers, and is therefore hopeless. Sin separates us from God. Sin separates us from each other. Sin pollutes us and we become impure. Sin deceives us and we are in danger and know it not. A friend of mine walking along the streets of Cincinnati early one morning saw a young girl standing upon the very edge of the roof of one of the highest office buildings. She was carefully balancing herself and every moment it seemed as if she would fall. The elevator was not running, but he made his way hurriedly to the roof of the building, walked carefully across it, seized her by the hand, drew her back and found that she had risen in her sleep and all unconsciously was standing on the very brink of eternity. This is what sin does for us, and it is a solemn thought that for all such the text is true, "The wicked shall not be unpunished." II