Exodus 7:13

"And Pharaoh's heart was hardened, and he hearkened not unto them,' as Jehovah had spoken."

Faith is always a moral decision, and, in keeping with that principle, God has provided a nail in every episode of the whole Bible where Satan may hang his hat. The evil heart of Pharaoh discounted the miracle wrought by Moses and Aaron "as a fifteen-cent stunt that was not about to make him relinquish his lofty views of his own omnipotence!"[21] In a sense, his servants duplicated, or imitated the wonder, and that part about Aaron's rod swallowing all of theirs(!), well, he just ignored that.