Does your explaination or understanding take these two meanings into account?
1. Death on the cross.
2. Resurrection into His glorified body.
A believer's spirit, from God's eternal point of view, are sitting in heavenly places in Christ Jesus. We can not fully enjoy the "spiritual life" for while we are trapped in this flesh body we see through a glass darkly. Our battles are in the spirit with spiritual weapons, even though we are still in the sinful flesh.
Eph 2:5-6
5 Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;)
6 And hath raised us up together, and made us sit together in heavenly places in Christ Jesus:
1 Cor 13:12
12 For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known.
Eph 6:12-13
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
13 Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.
Jesus conquered our physical bodily death by dying and resurrecting from the dead. And His sinless shed blood paid for our spiritual death, for without shed blood there is no remission for sin, and thus eternal seperation from God until we accept the gift of salvation that Jesus provided. Everyone's ticket to heaven is waiting for them at will-call, with a simple acknowledgement of Christ's provision one needs only to turn to the direction of will-call (repent) and accept their gift.
Mat 26:28
28 For this is my blood of the new testament, which is shed for many for the remission of sins.
Heb 9:22
22 And almost all things are by the law purged with blood; and without shedding of blood is no remission.
Acts 10:43
43 To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins.