Folly See also Fool; Foolish every mouth speaketh folly, 2 Ne. 19:17 (Isa. 9:17). folly of Gentiles shall be made manifest, D&C 35:7 (63:15). they who have laughed shall see their folly, D&C 45:49. folly of adulterous members shall be made manifest, D&C 63:15. Saints bring judgments upon own heads by follies, D&C 124:48. Robert D. Foster called to repent of folly, D&C 124:116. folly of those who seek not the Lord’s counsel shall be made manifest, D&C 136:19.