'Venom' in the Bible

Their wine is the venom of serpents, a poisonous cobra.

Their venom is like a poisonous snake; even like a deaf serpent that shuts its ears,

They sharpen their tongues like a serpent; the venom of vipers is on their lips. Interlude

Their throats are open graves. With their tongues they deceive. The venom of poisonous snakes is under their lips.