Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
(Heb. tsepharde'a, meaning a "marsh-leaper"). This reptile is mentioned in the Old Testament only in connection with one of the plagues which fell on the land of Egypt (Ex. 8:2-14; Ps. 78:45, 105:30
In the New Testament this word occurs only in Rev. 16:13, where it is referred to as a symbol of uncleanness. The only species of frog existing in Palestine is the green frog (Rana esculenta), the well-known edible frog of the Continent.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.