One day, Jesus was teaching and a large group of people had gathered around. It was one of the largest groups to listen to him to date, and even local religious leaders were there to hear what he had to say.
Toward the end of his sermon, Jesus asked a curious question. He said, "Which of you, if your son asks for bread, will give him a stone? Or if he asks for a fish, will give him a snake?" To the people of that time, these questions would have made complete sense, and would have been taken as lighthearted, rhetorical questions. That's because, locally, there was a kind of eel in the river that was a fish, but looked like a snake, and was completely inedible. If your son asked for a fish to eat, there's no way you would give him some disgusting eel that you knew he couldn't eat. You'd give him some fish. The people listening would have been laughing, yet puzzled.