Midrasch zu Schemot 12:26

"And when your children will say to you, What is this work for you?" (Exodus 12:26) At that time Israel was informed of bad tidings, for in the future their children would forget the Torah. [The child] is deliberately asking this way, meaning  [What is this work] for you and not for him[self]. He is one of the four sons that the Torah spoke about, one wise, one wicked, one simple, and one who does not know to ask. This [verse] is the wicked one who removes himself from the collective and denies his creator: