The Son added a human nature to His Divine Nature as God (equal with God, Equality with God)was His and did not need to reach or grasp it for it was His.
The Bible says a human nature is spirit and soul and body.
Was "a human nature" that the Son "added" CREATED?
It would seem that it could not have existed before if it was "added".
But I would like you to confirm.
I believe just Jesus' body was created while YHWH God became the human spirit and soul of Jesus.
Here is an overview of what I believe...
For this creation, YHWH God (the only one who transcends all creations) determined to create a universe with a kingdom of redeemed humans (living souls) for his glory where he would reign as a living soul himself. The Scriptures describe how God would accomplish his plan. In an instant, transcendent God (called God the Father) created the supernatural and space-time of this universe and also became immanent as a spirit (called the Spirit of God) and in the form of a living soul (called the Word of God) with a glorious body. God the Father then created all things within the universe by the power of the Spirit of God commanded by the Word of God. But whereas God created a human spirit and soul for each of us, God himself as the Word became the human spirit and soul of Jesus. At his conception, Jesus' glorious body was changed to a mortal body to be made like us so he could make reconciliation for our sins. At his resurrection, Jesus' mortal body was changed back to a glorious body and he will also give each of his elect a glorious body when he returns to reign in his kingdom forever.