God also makes mistakes if we cannot convince him

One day a 50-year old man was praying. Suddenly God appeared in front of him saying, "I will fulfill just one of your wishes. Mention it." The man immediately thought of his wife being elder to him by 20 years. So he said, "I want my wife to be younger than me by 20 years". The God took out his magic wand and boom, he became 70 years old man.