Charles preached yesterday on the subject of "True and False Zeal". I wish so much someone would have laid these truths before me at the beginning of my Christian life.
One thing my wife brought out after the message was insightful. We often look at a naturally zealous person and think, "If God would just save that person think of all the good they could do for Christ." Nothing could be further from the truth. God would have to crush all of their false zeal first (eg. Acts 9:8-9). Then and only then might they be of some use in His service.