He says, "let the dead bury the dead".
People in the world in bodies are pretty much the "living dead". Also...
"Miracles fall like drops of healing rain from heaven, on a dry and dusty world, where starved and thirsty creatures come to die."
"Here the deathless come to die, the all-encompassing to suffer loss, the timeless to be made the slaves of time. Here does the changeless change; the peace of God, forever given to all living things, give way to chaos. And the Son of God, as perfect, sinless and as loving as his Father, come to hate a little while; to suffer pain and finally to die."
Being in a body at all, unless your mind is awake and you're about to get outta here, is a state of death. We might think that the physical world is "life", but it's really death. Or at the very least, it is stages of death and preparation for death.
Those whose mind is not with Heaven have chosen to believe in death to some degree, and therefore are identifying themselves as something which is made of death - the ego's idea of living.
This is why all objects and materials and plants and animals and humans and planets and stars all "die" in this universe, because they're already dying because they are FUNDEMANTALLY made of death (separation).
Physical birth IS actually the beginning of DEATH and is NOT the beginning of life. What changes is not alive and cannot be life at all.
So all those people out there, as bodies, and maybe "you" as a body also, are zombies. The living dead.
This is why RESURRECTION makes sense as a RETURN to life. The final resurrection is the complete exit from the "dream of death" (by TRUTH not death), but along the way as you are awakening to truth you are also COMING BACK TO LIFE.
This is why "raising the dead" is not just a matter of restoring life to what seems to be a corpse, which IS entirely possible, but it ALSO means the raising of all those who are in the process of dying, who are unconsciously dreaming, who identify themselves with "things that die", and who are not really fully alive.
Life is ONLY eternal life. Life is not partial living or partial death or fluctuations in-between. God is life and is the giver of life. Not physical forms, but life as Immortal Spirit. The Christ. Son of God. Your Real Self. That is living with God in the living Heaven. This world is not that, although it may come to REFLECT a vision of heaven prior to returning TO heaven.
Resurrection is the raising of the dead back to eternal life and the complete exiting of identification with or limitation by anything which is not of God - i.e. any kind of body. This applies to "dead bodies" as much as it applies to "living bodies", ALL of which are dead.
Life is forever.
If it were true that the dead could not be raised, this would HAVE to mean that those who have gone into unconsciousness and separation and denial and are therefore choosing death, could not be recovered. Those who have fallen asleep into a dream world could not be saved. And those who are the "living dead" walking around believing they are ACIM students could not possibly INCREASE their aliveness.
If it is true that you CAN resurrect, that you CAN awaken from this deadly dream, and that you CAN return to Life, then one way or another, death MUST be reversible. Each time you forgive and claim the atonement, you ARE returning to life and ARE RESURRECTING.
Either resurrection is possible and permanent, or death is possible and permanent. Either death has power over God's Son, or there is potential for God's Son to return to life.
Failing to believe that raising the dead is POSSIBLE, MUST be a belief that resurrection is IMPOSSIBLE. And if you do not believe in resurrection, you do not believe in forgiveness or the undoing of the ego. If you are an ACIM student, you SHOULD believe that raising the dead is entirely possible, otherwise there is no hope for you to return to God.
Only Eternal Life with God is reality.