Proverbs 25:18

25:18 Like a club or a sword or a sharp arrow,

so is the one who testifies against his neighbor as a false witness.

Psalms 52:2

52:2 Your tongue carries out your destructive plans;

it is as effective as a sharp razor, O deceiver.

Psalms 57:4

57:4 I am surrounded by lions;

I lie down among those who want to devour me;

men whose teeth are spears and arrows,

whose tongues are a sharp sword.

Psalms 59:7

59:7 Look, they hurl insults at me

and openly threaten to kill me,

for they say,

“Who hears?”

Psalms 64:3

64:3 They sharpen their tongues like a sword;

they aim their arrow, a slanderous charge,

James 3:6-8

3:6 And the tongue is a fire! The tongue represents the world of wrongdoing among the parts of our bodies. It pollutes the entire body and sets fire to the course of human existence – and is set on fire by hell.

3:7 For every kind of animal, bird, reptile, and sea creature is subdued and has been subdued by humankind. 3:8 But no human being can subdue the tongue; it is a restless evil, full of deadly poison.