All the persons coming with Jacob to Egypt, issue of his loins…sixty-six persons in all. Joseph and his two sons were already in Egypt: And the sons of Joseph who were born to him in Egypt, were two persons. This bring the tally to sixty nine people and yet the Torah insists that: All the persons of the household of Jacob who came to Egypt were seventy. Who is this additional person? Rashi cites a tradition that as they were arriving in Egypt, Yoheved, the mother of Moses, was born “between the walls” and this rounds the party out to seventy. In his work about the Haggadah, The Telling: How Judaism’s Essential Book Reveals the Meaning of Life (2021), Mark Gerson offers: Each of us is number seventy…this ratifies the purpose of Pesach-to assimilate history into memory…to establish every Jew as a member of a community that stretches across generations and across geographies as one.