Bible Verses About Serpents: Often sent as a punishment

Wherefore the Lord sent among the people fiery serpents, which bit them and killed many of them.

They shall be consumed with famine, and birds shall devour them with a most bitter bite: I will send the teeth of beasts upon them, with the fury of creatures that trail upon the ground, and of serpents.

Neither let us tempt Christ, as some of them tempted and perished by the serpent.