Cross reference
Exodus 8:6
6 And when Aaron put out his hand over the waters of Egypt, the frogs came up and all the land of Egypt was covered with them.
Psalms 78:45
45 He sent different sorts of flies among them, poisoning their flesh; and frogs for their destruction.
Psalms 105:30
30 Their land was full of frogs, even in the rooms of the king.
Leviticus 11:12
12 Anything in the water which has no special parts for swimming and no thin plates on its skin is disgusting to you.
Revelation 16:13
13 And I saw coming out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet, three unclean spirits, like frogs.