Jesus Christ gets His Person from His Divine nature as God the Son. It was the 2nd Person of the Godhead who became Incarnate hence He is God in the flesh, Emmanuel etc......
Nestorianism
Nestorianism insisted that there were two natures but that there were also two persons: one divine and the other human. Rather than unifying Jesus, this view separated the person of Jesus along with his two natures.
Two natures of Jesus
The
two natures of Jesus refers to the doctrine that the
one person Jesus Christ had/has two natures,
divine and
human. In theology this is called the doctrine of the
hypostatic union, from the Greek word
hypostasis (which came to mean
substantive reality).
Early church figures such as
Athanasius used the term "hypostatic union" to describe the teaching that these two distinct natures (divine and human) co-existed substantively and in reality in
the single person of Jesus Christ. The aim was to defend the doctrine that Jesus was simultaneously truly God and truly man.
Historical development
The doctrine of the hypostatic union (the two natures of Jesus) was adopted as orthodox doctrine at the
Council of Chalcedon in 451. Three major schools of theology were involved at the council: Alexandria, Antioch, and the West. The consensus of these three schools in the
Chalcedonian Creed illustrates the catholicity (i.e. universality) of the ancient church. ^[1]^ The creed asserted two distinct natures, human and divine, and affirmed the
one person of Jesus Christ.theopedia
hope this helps !!!