“Reb Avrohom, we have to bring the Rebbe back” ( Igros Kodesh , Vol. 4, p. 156 ).
Seventy is a very significant age, for it represents the full span of a lifetime, as David Hamelech says in Tehillim: “Our days are seventy years”.[1]
But how does this fit with the fact that some people lived for much longer? In particular, the Avos—Avraham, Yitzchak, and Yaakov—lived for far longer than seventy years. It would seem clear that David included all mankind in his statement, including the Avos, so why did they live for so long?