Do this in remembrance of Me. What is it we are to "do" and what does it mean to "remember?" How does Jesus fulfill the Passover (and implied - all the OT stories and traditions), and how does His fulfilling the Old, bring changes and a new way of relating to God and celebrating His saving work? Jesus gives the true meaning to the Passover and the Exodus, which was God central redeeming work in the OT, but only a picture that pointed to a much greater salvation - the redemption from the slavery of sin and death itself. Jesus fulfills what the Exodus and Passover where only pictures of. He is the great and final Passover lamb who was slain for our redemption.