Serpent: Subtlety of

Now the serpent was more crafty than any beast of the field that the LORD God had made. And he said to the woman, “Did God really say, ‘You must not eat from any tree in the garden?’”

He who digs a pit may fall into it, and he who breaches a wall may be bitten by a snake.

Behold, I am sending you out like sheep among wolves; therefore be as shrewd as snakes and as innocent as doves.