Exodus:8:7-8
nkjv@Exodus:8:7 @ And the magicians did so with their enchantments, and brought up frogs on the land of Egypt.
nkjv@Exodus:8:8 @ Then Pharaoh called for Moses and Aaron, and said, "Entreat the LORD that He may take away the frogs from me and from my people; and I will let the people go, that they may sacrifice to the LORD."