Job 16:9

16:9 His anger has torn me and persecuted me;

he has gnashed at me with his teeth;

my adversary locks his eyes on me.

Psalms 112:10

112:10 When the wicked see this, they will worry;

they will grind their teeth in frustration and melt away;

the desire of the wicked will perish.

8:12 but the sons of the kingdom will be thrown out into the outer darkness, where there will be weeping and gnashing of teeth.”

Stephen is Killed

7:54 When they heard these things, they became furious and ground their teeth at him.