Rabban Gamliel used to say: Whoever has not said these three things on Passover has not fulfilled his obligation, and they are the following: the pesach-[offering], matzah, and maror.  [The] pesach-offering [is offered] —- because the Omnipresent One passed over the houses of our ancestors in Egypt.  Matzah [is eaten] —- because our ancestors were redeemed in Egypt.  Maror [is eaten] —- because the Egyptians embittered the lives of our ancestors in Egypt.  In every generation a man must regard himself as if he himself had gone out of Egypt —- for it is said: And you shall tell your son on that day saying, “For the sake of this Hashem did for me when I went out of Egypt” (Exodus 13:8). Therefore we are obliged to give thanks, to praise, to laud, to glorify, to exalt, to honor, to bless, to extol, and to shower acclaim upon Him Who performed all these miracles for our ancestors and for us: He brought us forth from slavery to freedom, from sorrow to joy, from mourning to festivity, from darkness to great light, and from servitude to redemption —- so let us say before Him “Halleluyah!”

Until where does he recite? —- Beis Shammai say: Until A joyful mother of children (Psalms 113:8). Beis Hillel say: Until The flint into a spring of water (Psalms 114:8).  He concludes [the Haggadah] with [a blessing about] redemption. R' Tarfon says: “Who re-deemed us and redeemed our ancestors from Egypt,” and he does not conclude [with a final bles-sing].  R' Akiva says: “. . . so may Hashem our God and the God of our ancestors bring us to future festivals and pilgrimages, which approach us, in peace, gladdened in the rebuilding of Your city and joyful at Your service. May we eat there of the offerings and pesach-sacrifices . . .” until “Blessed are You, Hashem, Who has redeemed Israel.”