'Serpent' in the Bible

Rejoice not thou, Philistia, all of thee, That broken hath been the rod of thy smiter, For from the root of a serpent cometh out a viper, And its fruit is a flying saraph.

In that day lay a charge doth Jehovah, With his sword -- the sharp, and the great, and the strong, On leviathan -- a fleeing serpent, And on leviathan -- a crooked serpent, And He hath slain the dragon that is in the sea.

Wolf and lamb do feed as one, And a lion as an ox eateth straw, As to the serpent -- dust is its food, They do no evil, nor destroy, In all My holy mountain, said Jehovah!