The Haggadah discusses four sons and provides answers for each. It is curious that the response to the wicked son is not the verse associated with the question. The Vilna Gaon explained that we don’t answer the wicked son; anything we say to him will only make matters worse. However, we have to provide an answer to all the other people at the table who heard the wicked son ask his question. We cannot let his challenge of Jewish tradition stand without a response.