Cricketers talk a great deal about visual imperfection, for sooner or later the bowler finds the blind spot, the batsman misjudges the ball, and his sport comes to an end. The devil plays for the blind spot, and if there is such a defect in our spiritual vision, sooner or later it gets us into trouble. The blind spot in the natural eye is a necessary, unavoidable, physiological defect of which the brightest and most skillful athlete cannot rid himself. However, morally and religiously no part of our nature need be dark, and we may successfully defend ourselves in every assault. If for any subtle, selfish reason we harbor some bias of the mind, some prejudice that warps the judgment, some neglect of charity, some inertia that obstructs conviction, some deviation of aim, some deflection in action, we lay ourselves open to grievous losses and sorrows. “But if we walk in the light, as he [God] is in the light, we have fellowship one with another” (1 John 1:7). If we don’t have fellowship w...