'Serpents' in the Bible

Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves.

Ye serpents, ye generation of vipers, how can ye escape the damnation of hell?

They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.

Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.

Neither let us tempt Christ, as some of them also tempted, and were destroyed of serpents.

For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind:

For their power is in their mouth, and in their tails: for their tails were like unto serpents, and had heads, and with them they do hurt.