Exodus 7:10 - Exposition

Aaron cast down his rod . The rod is called indifferently "Aaron's rod" and "Moses' rod," because, though properly the rod of Moses ( Exodus 4:2 ), yet ordinarily it was placed in the hands of Aaron ( Exodus 7:19 , Exodus 7:20 ; Exodus 8:5 , Exodus 8:17 , etc.) It became a serpent . The word for "serpent" is not the same as was used before ( Exodus 4:3 ); but it is not clear that a different species is meant. More probably it is regarded by the writer as a synonym.