'Poisonous' in the Bible

So the Lord sent poisonous snakes among the people, and they bit the people; many people of Israel died.

The Lord said to Moses, "Make a poisonous snake and set it on a pole. When anyone who is bitten looks at it, he will live."

Beware that the heart of no man, woman, clan, or tribe among you turns away from the Lord our God today to pursue and serve the gods of those nations; beware that there is among you no root producing poisonous and bitter fruit.

They hatch the eggs of a poisonous snake and spin a spider's web. Whoever eats their eggs will die, a poisonous snake is hatched.

The Lord says, "Yes indeed, I am sending an enemy against you that will be like poisonous snakes which cannot be charmed away. And they will inflict fatal wounds on you."

They utter empty words, taking false oaths and making empty agreements. Therefore legal disputes sprout up like poisonous weeds in the furrows of a plowed field.

Disaster will be inescapable, as if a man ran from a lion only to meet a bear, then escaped into a house, leaned his hand against the wall, and was bitten by a poisonous snake.

Can horses run on rocky cliffs? Can one plow the sea with oxen? Yet you have turned justice into a poisonous plant, and the fruit of righteous actions into a bitter plant.