If you were " A spiritually DEAD" person then you would already been destroyed with nothing to save.
"All corruptible natures therefore are natures at all only so far as they are
from God, nor would they be corruptible if they were
of Him; because they would be what He himself is. Therefore of whatever measure, of whatever form, of whatever order, they are, they are so because it is God by whom they were made; but they are not immutable, because it is nothing of which they were made. For it is
sacrilegious audacity to make nothing and God equal, as when we wish to make what has been born of God such as what has been made by Him out of nothing." --St. Augustine
St. Augustine makes a point here. You can't start spiritually dead because then you claim to be a GOD who makes things from nothing.
God created you. Now after your creation you can become corrupt. But if you become so corrupt that there is nothing GOOD, "Totally Depraved" , Then your nature ceases to exist, you have been destroyed.
There is NOTHING TO SAVE THERE. Think about it, Murder and Rape are evil things. Do you think God will save MURDER to bring to heaven?
If there is absolutely NOTHING good about you, if you are totally depraved, your nature is equated with sin like murder. There is absolutely NOTHING there to save.
This all comes from a mistake of FALSE HUMILITY. Its a good start for a sinner to say "i am good for nothing" and repent ect. But thats not the best start nor the whole truth. His skewed view is self refuting. IE. IF he is good for nothing , he is also not good for judging himself.