Gnash, Gnashing he shall gnash with his teeth, Ps. 112:10. against thee: they hiss and gnash the teeth, Lam. 2:16. weeping and gnashing of teeth, Matt. 8:12 (13:42, 50; 22:13; 24:51; 25:30; Luke 13:28; Alma 40:13; D&C 19:5; 85:9; 101:91; 133:73; Moses 1:22; JS—M 1:54). foameth, and gnasheth with his teeth, Mark 9:18. cut to the heart, and they gnashed on him, Acts 7:54. wicked … gnash their teeth, Mosiah 16:2.