Don’t Forget This Mitzvah on Passover Night!

There was one biblical mitzvah on the night of Pesach, besides eating matzah. Does anybody know what's the one mitzvah the Torah gives us for the night of Pesach? Only I'm not talking about all the customs and traditions and songs, that's beautiful. I'm talking about one mitzvah in Torah besides eating matzah. There's one mitzvah in the Torah, you know what that is? Two words, "V'higadeta l'vincha." Connect to your child. Talk to your child. Share the story with your child. That's Pesach. Pesach is, can I sit down, look at my child, at my children, and say, "Wow, thank you for being my son. Thank you for being my daughter. And just I want to be with you. I want to be present with you."