Matthew 3:7
But when he saw many of the Pharisees and Sadducees coming to be immersed, John said to them, "You children of snakes, who warned you to run away from the coming wrath [of God]?
Matthew 23:33
You snakes! You children of snakes! How do you expect to escape being judged [and condemned] in hell?
Romans 3:13
[Psa. 5:9 says], "Their throats are like open graves [i.e., they are foul-mouthed]. They have spoken deceitfully." [Psa. 90:3 says], "There is snake venom under their lips [i.e., their words are deadly]."
James 3:8
but no one can subdue the tongue. It is an uncontrollable [source of] evil and full of deadly poison.