the poison

Job 20:14-16
yet his food will sour in his stomach to the venom of cobras within him. . . .

Psalm 58:4
Their venom is like the poison of a serpent, like a cobra that shuts its ears,

Psalm 140:3
They make their tongues as sharp as serpents; the venom of vipers is on their lips. Selah

Jeremiah 8:14
"Why are we just sitting here? Gather together, let us flee to the fortified cities and perish there, for the LORD our God has doomed us. He has given us poisoned water to drink, because we have sinned against the LORD.

Romans 3:13
Their throats are open graves; their tongues practice deceit. The venom of vipers is on their lips.