'Venom' in the Bible

“Their wine is the venom of serpents,And the deadly poison of vipers.

Yet his food turns [to poison] in his stomach;It is the venom of vipers within him.

Their poison is like the venom of a serpent;They are like the deaf horned viper that stops up its ear,

“Their throat is an open grave;They [habitually] deceive with their tongues.”“The venom of asps is beneath their lips.”