Proverbs 20:18 - Joseph Benson’s Commentary on the Old and New Testaments

Every purpose is established by counsel “Rashness spoils the best designs, which must be carried on prudently, and with good advice, if we would have them to prove successful.” And with good advice make war Warlike expeditions are not to be undertaken without great deliberation. It should be maturely considered, whether the war ought to be begun or not; whether it be just, whether it be prudent. And, when it is begun, how, and by what arts, it may be successfully prosecuted: for skill is as necessary as courage. Going to law is a kind of going to war, and therefore should not be done without good advice.