From here they said: In the beginning, whoever could recite the formula (by himself) did so, whoever could not, recited after another — whereupon they stopped bringing bikkurim (to avoid embarrassment). It was, therefore, ordained to have one who knew how (to recite it) do so; and for those who did not know how to recite it, they relied on "and you shall answer" — "answering" is in response to another.
"and you shall say before the L-rd your G-d: 'An Aramean would destroy my father'": We are hereby apprised that Jacob went down to Aram to his own destruction, and Scripture accounts it to Lavan the Aramite as if he had destroyed him, (this having been his intention).