Lets start here to set this straight before moving on. You might want to do a rewrite in your thinking.
1. I did not mention anywhere of our physical death being a "spiritual" one.
However, when it does die: ". . . the 'dust' returns to the earth from it came with[B ]the spirit returning to God who gave it[/B]. Ecclesiastes 12:7 (KJV)
. . . a. Man's soul and body are held together by the "Breath of Life" that is of God which we ore commonly call the "spirit of man” or our “human spirit", our human spirit being loan from God for as long as his body remains alive, intact with his “mind, will and emotions”, his soul, that which makes man, eternal:
"And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul". Genesis 2:7 (KJV)
Mans 'being' consists of body and soul and spirit. Separate them and he stops being a living being.
The source of life in Adam was his obedience to God. When Adam transgressed, God departed his "being" because He could not abide sin in His presence. Notice it was God Who departed Adam and not the other way around. That fact gives us understanding as to why we misunderstand when believing Adam as becoming spiritually dead. This also explains Cain and Abel. He wasn't and they weren't. Their Body, soul, and spirits were left intact and this is what could only be the case until actual physical death could happen. Jesus addresses this by using Himself to explain it."And when Jesus had cried with a loud voice, he said, Father, into thy hands I commend my spirit: and having said thus, he gave up the ghost [His human spirit and Holy Spirit, which were in complete union]". Luke 23:46 (KJV) He died. His body went into the grave and His soul descended into hell for three days. His sinless life made that possible: "For thou wilt not leave my soul in hell; neither wilt thou suffer thine Holy One to see corruption." Psalm 16:10 (KJV) Death had no hold on Him as it has no hold on innocence.
To sum up we have these words of Jesus:
". . . . I am the resurrection, and the life: he that believes in me, though he were [physically] dead, yet shall he live: And whosoever lives and believes in me shall never die. .. . . " John 11:25-26 (KJV) His soul, [mind, will and emotions] and spirit are in His keeping: And . . "if the Spirit of him [God’s, "breath of life"] that raised up Jesus from the grave dwells in you, He that raised up Christ from the dead shall also quicken your mortal bodies by His Spirit that dwells in you." Romans 8:11 (KJV)
For the new born from above, it is the same Spirit and for which Paul has these words: "Have this mind in yourselves, which is yours by Christ Jesus, who, though he was in the form of God, did not count equality with God a thing to be grasped", Philippians 2:5-6 (CRV). This is also why Jesus could say this because of His human spirit being in such complete with union with the Spirit of God: "The glory that you have given me I have given to them, that their [souls] may be one even as we are one " [soul] ,John 17:22 (ESV). No death in that even when the body decays, the departs because the human spirit is in union with the "source of life". It cannot be otherwise.
Hence, the soul, that which a person is, cannot return to God without being reconciled to Him; without the peace made in man’s behalf by Jesus Christ, is “fully” received to his soul.. . . with the stamp of God on it.
[emphasis mine]
