John Gill Commentary Psalms 89:48

"What man is he that shall live and not see death, That shall deliver his soul from the power of Sheol? Selah" — Psalms 89:48 (ASV)

What man is he that lives, and will not see death ?
&c.] Every living man must die; as sure as a man lives, so sure he will die: be he strong and mighty, as the word signifies, or weak and sickly; be he high or low, rich or poor, prince or peasant, righteous or wicked; persons of all ranks, states, and conditions, age or sex, must die; for all have sinned; and it is the appointment of God that they should die, and very few are the exceptions; as Enoch and Elijah, and those that will be found alive at Christ's coming:

will he deliver his soul from the hand of the grave ;
&c.] either from going down into it, or coming under the power of it; so the Targum, what man is he that will live, and will not see the angel of death ((Hebrews 2:14)) will he deliver his soul from his hand, that he should not go down to the house of his grave? or deliver himself from the power of it, when in it; that is, raise himself from the dead: none ever did this, or ever can: Christ indeed undertook, and has promised, to redeem his people from the power of the grave, upon which they have believed they would be delivered; see (Hosea 13:14) (Psalms 49:15) ,

but if Christ did not rise himself, which was the thing now in question, how could it be? the case stands thus; every man must die; no man can raise himself from the dead; if Christ did not rise, everyone must continue under the power of the grave; for then there could be no resurrection.

Selah. (See Gill on Psalms 3:2).