Wisdom is better than weapons of war; but one sinner destroys much good. (Ecc 9:18) The title of this article comes from a statement of the writer of the book of Ecclesiastes in chapter 9, verse 18. It conveys a thought that each of us must consider. It tells us that a sinner wields a lot of influence, but it is the wrong kind and it is destructive! Notice that the text doesn't say that "many sinners destroy much good," but "one sinner destroys much good." Many times one sinner does more harm to the cause of good, than one righteous person does to a stampeding herd of ungodliness.
A preacher may be a very effective pulpiteer, and he may have a firm grasp on the truth of scripture, but if he doesn't believe what he preaches enough to live it, he is himself a sinner who destroys any good that he achieves (1 Timothy 4:11-12).
An elder may have tremendous leadership skills coupled with a broad knowledge of God's word, but if he doesn't practice what he requires about honesty, controlling the tongue, moral purity, and all else, he isn't fit for the position of overseer. He will destroy any good that he accomplishes (1 Timothy 5:20; Titus 1:7).
A Bible class teacher may be kind, knowledgeable, and very practical in his application of scripture, but if he is a gossiper, quick tempered, listens to slander, and never asks forgiveness from those against whom he has sinned, any good that he accomplishes will be destroyed by his sins (Romans 2:19-24).
If others see people in the church who claim to be Christians, but whose lives are full of hypocrisy and evil, then any good that is accomplished by the congregation will be destroyed (Hebrews 10:26-29).
We should promote good instead of destroying it. If our lives are not what God says they should be we are destroying the good that we or other saints seem to be achieving. We must repent of our sins and start anew. Christians, if there is sin in your life, stop it and turn to God. Then and only then will the good that we and others are trying to do will not be destroyed.