1)
Why does it say "Mi Gever
1.
Radak: There is no one [who can live and escape death and the grave].
2.
Malbim: All generations are destined to die, via Adam ha'Rishon's sin. Who will not see death, like Eliyahu ha'Navi, who remained alive, or at least save his Nefesh from She'ol 1 ?! At a time of Galus, it is hard to find happiness of the Nefesh and the promised salvation; then, death will depart - "Lo Yihyeh mi'Sham Od Ol Yamim v'Zaken" (Yeshayah 65:20).