The Egyptian magicians had been duplicating everything Moses did. They were able to turn their staffs into snakes, turn water into blood and now produce frogs. We know from the story that Moses wasn't evil or ungodly for producing frogs. It didn't matter how many frogs the magicians produced, Moses was obeying God in doing the same.
I've discovered something disturbing in some Christian circles. They say that because people in Eastern religions or the New Age movement meditate and use silence as part of their religious practices, if Christians are engaged in meditation or contemplative prayer, they are embracing Eastern and New Age spirituality. It is true that there is a dangerous move in some churches towards non-Christian spirituality but we need to be careful that we don't throw out the good with the bad.
The Egyptian magicians produced frogs, the sailors on the ship with Jonah prayed, the prophets of Baal offered a bull on an altar. That doesn't mean that Moses' production of frogs, Jonah's prayers or Elijah's offering of a bull at the same site were evil and ungodly.
Years ago I watched an episode of The Waltons that stuck with me. It was the time of World War II and the townspeople, in their angry response to what Hitler was doing gathered every book they could find written in German to throw in a large bonfire. John Boy saw in the heap of books a Bible. The people were horrified at what their hatred had led them to. They would have willingly burned a Bible, simply because it was German.
The Pharisees did the same with Jesus--accusing him of being the devil because surely what he did was not of God.
Let us be cautious in what we call evil for Jesus is much bigger than our petty, theological squabbles.