A writer gives us a striking word picture of Satan's methods: "As the enemy who lays siege to a city finds out the weakest portion of the wall, or the best spot to batter it, or the lowest and safest place to scale it, or where the intervening obstacle may be easiest overcome, or where an advantage may be taken, or where an entrance may be effected, or when is the best time, or what is the best means to secure the desired end, so the arch-deceiver and destroyer of souls goes about, watchful, intent upon ruin, scanning all the powers of the mind, inspecting all the avenues to the heart and assailing every unguarded spot. Sometimes he attacks our understanding by injecting erroneous doctrine; sometimes our affections by excessive devotion to things we love; sometimes our wills by strengthening them in wrong directions; sometimes our imaginations by vain, foolish, trifling thoughts; and sometimes our feelings by too high or too low excitation." Some one has called Satan and his subordinates not omnipresent, but "shifting imps." They swarm the air, invisible, because they are spirit, watching for opportunities to edge their way into the hearts of mankind. They are shifting position, always to a point of least resistance. Like a current of electricity, always flowing from a point of higher potential pressure to one of lower, if points are connected by a conductor. The metallic substances from which the current starts and towards which it flows are called "electrodes," and are always of different potentiality. The current passes from the one of higher to the lower. Man in his own strength is the lower, and unprotected by the Spirit of God cannot resist the evil currents flowing from Satan continually. XIX THE CONFIDENCE MAN "In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them."--_2 Corinthians iv. 4._