(Devarim, Ibid.) "and His earth will atone for His people": Whence is it derived that the killing of Israel by the nations atones for them (Israel) in the world to come? From (Psalms 79:1) "A psalm of Asaf: O G-d, nations have entered Your inheritance … (3) They have shed their blood like water … (8) Do not remember against us (our) first sins, etc." R. Meir was wont to say: All who dwell in Eretz Yisrael are atoned for by the land, as it is written (Isaiah 33:24) "The people that dwell in it (Eretz Yisrael) nesu sin."
But I still would not know whether sin were removed from it or borne upon it, ("nesu" being susceptible of both meanings) — were it not written "and His earth shall atone for His people." And thus was R. Meir wont to say: "Whoever lives in Eretz Yisrael and recites the Shema morning and night, and speaks the holy tongue is a son of the world to come."