Can you imagine a good God creating a devil?

The Catholic Answers

I certainly cannot. But then, God did not create the devil. Let me explain. God did not create the devil as a devil. In other words, God did not create any evil spiritual being as evil. The angels, as created by God, were good beings of a spiritual nature, endowed with intelligence and freewill. Goodness alone is the terminus of God’s creative action. But some angels misused their freedom of will and rendered themselves evil by their opposition to the God who is goodness itself.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty