I would posit that at whatever time the Son became a Son...being begotten (being brought forth at some stage in eternity) of the Father and thus of the very same nature as the Father, (unlike created beings who only have what is granted them as opposed to what is inherited naturally by divine DNA [for want of another expression]) and being of the same nature as the Father is inherently divine.
“
Being in the form of God” or “
being in the nature (of)
God” does not imply that our Lord was divine, but rather that he was in same nature, a glorious spirit being as God, so too the angels. "
God is spirit (
that is he is a spirit being; invisible, mighty, powerful, and influential);
and those worshiping him must worship in spirit (honest-hearted)
and truth."—
John 4:24
Our Lord was a
spirit being, both before taking the likeness of men, and after. He alone is the only living creature to have ever experienced existence in three different natures--first, a very high order of spiritual nature, higher than angels; secondly, the human nature, a little lower than the angels; and thirdly, the divine nature, which is superior to all others.
“
For it pleased the Father that in Him all the fullness should dwell.” (
Col 1:19 NKJV)
The fullness of God does indeed dwell in the Son, for he is
the image of the invisible God..." (
Col 1:15) not only was he the image of the Father in his preexistence, but also whilst a human, and still remains even to this day.
All of God's intelligent and responsible creatures were created in His image, in His mental and moral likeness: that is, their mental and moral faculties are facsimiles of the divine nature. The difference, between them is in the range and scope of these corresponding faculties:
the one (mortal beings, man and angels)
is finite while the other (immortal beings)
is infinite. The range of the human nature is confined to the earth, while the range and scope of the divine is wider than the universe, boundless as space and unlimited as eternity.
Of course the true intent of the statement as used in the text was to imply that in him God gave complete authority, not merely over man, but over all things, both heavenly and earthly, fullness here means unlimited or complete power. “
All power (authority)
is given unto me, in heaven and in earth.” (
Matt 28:18)
The mere fact that our Lord “
came forth from the Father” (
John 1:27) that he was begotten of the Father does not imply that he would automatically share the same divine nature. If this were so, then we would be equally just to surmise that, that which his Son as a divine being, created or brought forth should also be divine, i.e. angels and men.
Now Harvest mentioned an important point. If Jesus were divine before the resurrection, how could He die? And that is a very good question, but there is a simple answer. Because He was born/begotten of the Father, He was given the power to lay aside His divinity in order to become wholly human. Though He remained the divine Son of God, the prerogatives of divinity He set aside until once again He came into His glory after the resurrection.
This is merely conjecture on your part and has no scriptural support. I’m sorry but this borders on the same ludicrous ideas put forth by our Trinitarian friends in support of their false doctrine.
In what way could it be said then that our Lord was highly exalted if he were merely reinstated to the same position which he supposedly possessed before?
An immortal being is one such as possesses life inherent meaning his existence is not dependent upon any outside source, he is death proof, incorruptible and nothing can change this. This is precisely why the Father is being very selective about those with whom he is going to give the gift of the divine nature. All such who will receive the crown of life must be made copies of God’s dear son, must past the same stringent test as he did else they will be disqualified.
"It was foreknown to God that his human creature would fall; he had determined that his sentence should be death; and he had prearranged that the test he would impose upon his Only Begotten would be that he should,
of his own free will, become the Redeemer of mankind, and, by so great a sacrifice as this implied, manifest his loyalty to the Father, and his faith in him. Thus, in the divine plan he was the "
Lamb slain before the foundation of the world." From this standpoint we perceive that so far from being forced to be man's redeemer--so far from the Father's practicing injustice toward the Son in this requirement, it was the Father's preparation of him for
the great exaltation--far above angels, principalities and powers and every name that is named, as partaker of his own nature and sharer of his own throne. (
Heb. 1:4; Eph. 1:21)
From this standpoint we cannot wonder that the Apostle speaks of our Lord's undertaking to be our Redeemer "
for the joy that was set before him." (
Heb. 12:2) The joy was not merely the anticipation of the highest place in the New Creation, far above all other creations; but we may reasonably suppose that this was a part of it. Nevertheless, we notice in our Redeemer's prayer to the Father while passing through the trials, that, with characteristic modesty, he did not refer to the great dignity and glory and immortality (the Divine nature) promised him and expected; but with a beautiful simplicity and humility asked merely that he should be restored to his previous station; as though he esteemed it honor enough that he should have been chosen of the Father as his agent to carry forward other features of the divine plan, as he already had been the honored agent in the creation of all things that were made. (
John 1:3) His simple words were,
"
Father, glorify me with the glory (the glorious spirit nature)
that I had with thee before the world was." (
John 17:5) But the Father's answer was full of meaning when he said, "
I have already glorified [honored] thee, and I will glorify [honor] thee additionally."
John 12:28,
Vatican MS.