Psalms 140:3

140:3 Their tongues wound like a serpent;

a viper’s venom is behind their lips. (Selah)

Ecclesiastes 10:11

10:11 If the snake should bite before it is charmed,

the snake charmer is in trouble.

Romans 3:13

3:13 “Their throats are open graves,

they deceive with their tongues,

the poison of asps is under their lips.”

James 3:8

3:8 But no human being can subdue the tongue; it is a restless evil, full of deadly poison.