| Geneva Study Bible Wisdom is better than weapons of war: but one sinner destroyeth much good. Jamieson-Fausset-Brown Bible Commentary 18. one sinner, &c.-(Jos 7:1, 11, 12). Though wisdom excels folly (Ec 9:16; 7:19), yet a "little folly (equivalent to sin) can destroy much good," both in himself (Ec 10:1; Jas 2:10) and in others. "Wisdom" must, from the antithesis to "sinner," mean religion. Thus typically, the "little city" may be applied to the Church (Lu 12:32; Heb 12:22); the great king to Satan (Joh 12:31); the despised poor wise man, Jesus Christ (Isa 53:2, 3; Mr 6:3; 2Co 8:9; Eph 1:7, 8; Col 2:3). Matthew Henry's Concise Commentary 9:13-18 A man may, by his wisdom, bring to pass that which he could never do by his strength. If God be for us, who can be against us, or stand before us? Solomon observes the power of wisdom, though it may labour under outward disadvantages. How forcible are right words! But wise and good men must often content themselves with the satisfaction of having done good, or, at least, endeavoured to do it, when they cannot do the good they would, nor have the praise they should. How many of the good gifts, both of nature and Providence, does one sinner destroy and make waste! He who destroys his own soul destroys much good. One sinner may draw many into his destroying ways. See who are the friends and enemies of a kingdom or a family, if one saint does much good, and one sinner destroys much good. | 
