Saraph 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.

The burden of the beasts of the south. Into a land of adversity and distress, Of young lion and of old lion, Whence are viper and flying saraph, They carry on the shoulder of asses their wealth, And on the hump of camels their treasures, Unto a people not profitable.