Hi Logic,
I don't have a lot of time to come back and discuss this from scripture, but I want to put this thought to you, that [b]Christ died to save our souls[/b], that they should be clothed with new bodies after we are raised from the dead, as He had a new body which was so unrecognisable that those who'd known Him before, didn't 'know' it was Him.
I agree that 'spirit' - the breath of God - gives life. There is a word for this in the Hebrew, which RonB expounds in an old thread I started. If you're interested, I'll dig it up for you. This spirit that gives physical life, is no longer eternal.
For the eternal life of the soul (and the body with which it will be clothed on high), the whole man needs to be brought back into fellowship with God, through man's appropriation of the solution to sin, namely, faith in the death, resurrection and life of Jesus Christ today.
What I'm suggesting is this: sin is [i]spiritual[/i] and specifically affects how a body feels and wants to behave. The acts of sin which a body does, which a person may control by the keeping of laws, doesn't deal with the sin-spirit which drives it, and is causing it to decay day by day, despite its breathing for a season. This sin-spirit is beyond fallen human control.
That's why God had to send Jesus to kill it once and forever. After this, it is possible for any man or woman to receive the Holy Spirit, which brings not only fellowship with God, but LIFE back into the physical body and enough driving strength (dunamis) to conquer personal sin. In fact, unless a Christian not only receives forgiveness for sins past, but also appropriates this power to live in the light, cleansed inwardly by the blood of Jesus Christ, he will go on sinning and will neither receive or inherit the kingdom of God (which 'is within', according to Jesus).
After receiving the Holy Spirit, we are to show forth our faith, which is otherwise invisible to the onlooker, by our works; works which are only possible through faith, which God has planned for us to do.
If you read the New Testament looking out for this thought, you'll meet it more often than you expect. (Or, at least, I did!) It is [i]these works[/i] which have a lasting effect on the state of a soul, so that when the soul is separated from the body at death, it and the spirit which has now been joined by the Holy Spirit to God since new birth, go to be with God. (We 'fall asleep in Jesus'.)
What I'm saying is, that as we who have received the power to walk in newness of life, DO ACTUALLLY WALK IN NEWNESS OF LIFE, our souls are being saved and not only being saved by His life, but are being [i]transformed[/i].
Because I believe 'the soul' is God's way of defining everything about us in a uniquely individual format, I don't believe it's helpful for Christians to talk about 'laying down' their 'soul life'. What they are really talking about, is living a completely new way, where their flesh is no longer in control. I'm not disputing that this is a battle, but, it is a battle over the soul's survival - the soul which God died to preserve to a better hope.
It should not be a battle in which the soul's [i]destruction[/i], is [i][b]intended[/b][/i], which is the way many people seem to view it, perhaps because of Watchman Nee's terminology. (I wonder if this might be an error of thought-[i]translation[/i], rather an error of Watchman Nee's thought (if you see what I mean).)
In Christ, the soul is already redeemed completely, and the battle is for its [u]transformation[/u] into the likeness of Christ's.
Christ put the power of His body only into doing and speaking what His Father gave Him, and so should we. This is the submission to God's will which we seek, and for which we battle individually.
To illuminate this thought further, let me show you how the thought-meaning of one verse is changed completely, depending on which (of two legitimate English options) choice of word is made.
Romans 8 (NKJV)
12 Therefore, brethren, we are debtors -- not to the flesh, to live according to the flesh.
13 For if you live according to the flesh you will die; but if [u]by[/u] the Spirit [u]you[/u] [b]put to death the deeds of the body[/b], you will live.
'you will live' = your soul will live
The problem with the above 'by' is that it sounds as if we are supposed to instruct the Spirit of God to do the putting to death of the deeds of the body.
The same verses in the KJV had a different [i]feel[/i]
12 Therefore, brethren, we are debtors, not to the flesh, to live after the flesh.
13 For if ye live after the flesh, ye shall die: but if [u]ye[/u] [i][b]through the Spirit[/b][/i] [u]do mortify the deeds of the body[/u], ye shall live.
ye = plural you
Maybe it's just me, but 'through the Spirit' conveys to me that I have to do the work, but with the Spirit's power aiding me.
This ties in with other times when 'keep yourself' or 'keep yourselves' also puts the onus on the believer to do the work, but, there is no expectation that such work could be successfully achieved, [i]without[/i] the help of the Holy Spirit empowering our spirit.
I think there is also something of [i]desire[/i] in our spirit.
Have you ever heard 'the road to hell is paved with good intentions'?
Well, this is where the rubber hits the road... in the question of which desires are going to prevail in the [u]actual[/u] outworking of the life we now have in our bodies, through the Holy Spirit. This will determine whether our soul is saved [i]in the end[/i], or not.
Psalms 16:10
For thou wilt not leave my soul in hell; neither wilt thou suffer thine Holy One to see corruption.
You said Jesus' spirit died. I don't think this is scriptural, in that He chose to give it up - or let it go - when He did, thus committing His [u]body[/u] to death.