Interpretation of Exodus 13:8 – The Pesach Story at the Seder
Question
The requirement to tell the Pesach story to our children at the Seder is derived from Exodus 13:8.
But Exodus 13:8 does not literally direct us to tell the Pesach story to our children at the Seder. It is by an interpretation of Exodus 13:8 that we are directed to tell the Pesach story to our children at the Seder.
My question: Who made this interpretation, when did they make this interpretation, what did they say, and where is this memorialized?