death noun \ˈdeth\
Definition of DEATH
1
a : a permanent cessation of all vital functions : the end of life
...now let the Augustinians spin (or ignore) how and when such "life" ended (you know, how death is defined) that one can be conceived spiritually "dead"
I will address your point in this post. For I agree what you posted about death here. And that is not only the state of man but also of everything else.
Salvation is giving life to what is dead. Man will receive salvation from God by grace through the faith. If he is given life because he believes something then it would no longer be by grace.
In hope of eternal life, which God, that cannot lie, promised before the world began;
Now faith is the substance of things hoped for, the evidence of things not seen.
For man to receive any promise made by God the Christ would have to receive it first. Abraham died not having received the promises because the promises come through the seed of Abraham the Christ. Gal 3:19 Wherefore then [serveth] the law? It was added because of transgressions, till the seed should come to whom the promise was made; [and it was] ordained by angels in the hand of a mediator.
And being made perfect, he became the author of eternal salvation unto all them that obey him;
Jesus became the author of eternal salvation by being given the promise of eternal life by the resurrection from the dead by his Father God.
Christ died for us. By your definition of death did Christ die for us or not?
a permanent cessation of all vital functions : the end of life
If God the Father had not raised him from the dead would he still be dead today.
For if the dead rise not, then is not Christ raised: And if Christ be not raised, your faith vain; ye are yet in your sins.
If Jesus isn't raised there will be no life given to anyone.