Apollo explains to the Furies what Zeus cannot do:

You foul animals, from whom the gods turn in disgust,
Zeus could undo shackles, such hurt can be made good,
and there is every kind of way to get out. But once
the dust has drained down all a man’s blood, once the man
has died, there is no raising of him up again.
This is a thing for which my father never made
curative spells. All other states, without effort
of hard breath, he can completely rearrange.