The Israelites bitten by fiery serpents (Book of Numbers
chapter 21). A print from the Phillip Medhurst Collection of Bible illustrations
The fiery flying serpent is a snake creature mentioned in the Hebrew Bible (Book of Isaiah, the Book of Numbers, etc.). In biology it is the Echis coloratus (saw-scale viper).
"Fiery flying serpent" is an English translation of the Hebrew words שרף מעופף, shārāp (a "fiery serpent") me‘ōpêp ("flying").