For all of the remaining days of Adam’s life he was to work hard for his food. He was to do so until his life was over. At which point he would return to the ground from which he was made.
This is the sentence upon all man. There was no sentence of spiritual death.
The thing that separates us from seeing God and entering His kingdom of heaven is our sinful flesh nature.
Flesh and blood can not see or enter God’s kingdom as represented as paradise, not because he is “spiritually dead” but because he needs a change to his flesh and blood nature. The nature he was created with must be changed.
Once his nature is change, he can then both see and enter paradise.
1Co 15:50
Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; nor does corruption inherit incorruption.
1Co 15:51
Behold, I tell you a mystery: We shall not all sleep, but we shall all be changed—
1Co 15:52
in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised incorruptible, and we shall be changed.
1Co 15:53
For this corruptible must put on incorruption, and this mortal
must put on immortality.
1Co 15:54
So when this corruptible has put on incorruption, and this mortal has put on immortality, then shall be brought to pass the saying that is written:
“Death is swallowed up in victory.”[fn]
1Co 15:55
“O Death, where is your sting?[fn]
O Hades, where is your victory?”[fn]
1Co 15:56
The sting of death
is sin, and the strength of sin
is the law.
1Co 15:57
But thanks
be to God, who gives us the victory through our Lord Jesus Christ.
1Co 15:58
Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord.
The body that is raised from the dead is not of sinful flesh and blood. It is a change of nature.
Paul says that it is incorruptible and immortal.
It is by being raised from the sleep of death or immediately changed upon those who are not sleeping the sleep of death. They shall all be changed in the twinkling of an eye.
When this happens, they will actually be seated with Christ in the heavenly places as Paul said they are in Eph 2.
Eph 2:4
But God, who is rich in mercy, because of His great love with which He loved us,
Eph 2:5
even when we were dead in trespasses, made us alive together with Christ (by grace you have been saved),
Eph 2:6
and raised
us up together, and made
us sit together in the heavenly
places in Christ Jesus,
Obviously we are not sitting together in the heavenly with Christ. Not yet.
Paul is here referring to being born of water when baptized into the name of Christ.
Baptism symbolizes death, burial and resurrection with Christ.
Symbolically, we die to the flesh and are raised to sit with Christ through baptism.
It actually occurs when our nature changed in the twinkling of an eye, at the last trump, when Christ returns to claim those who are his.
They will then actually be seated with him where he actually is seated.