Mark 9:18 and wheresoever it seizes him it tears him, and he foams and gnashes his teeth, and he is withering away. And I spoke to thy disciples, that they might cast him out, and they could not. (DBY NIV)
Job 16:9 He hath torn me in His wrath, and hated me; He hath gnashed upon me with His teeth; mine adversary sharpeneth his eyes upon me. (See NIV)
Psalms 37:12 The wicked plots against the just, and gnashes at him with his teeth. (WEB NAS RSV)
Psalms 112:10 The wicked shall see it, and be vexed; he shall gnash with his teeth, and melt away; the desire of the wicked shall perish. (See RSV)