You have asked a question to which, I suppose, you expect some answer. You asked what is in Jesus that is God Himself? The Orthodox answer is that it is His Person. The embodiment God is the Person of the Son of God, and the Father did not embodied and the Person of the Father is „other" in relation to the Person of the Son.
In theology we have a term for this: „personal properties". So, no matter how intertwined the persons are, if they are one in the other, they will be completely special in that unity. I find something interesting in this conversation with all the members. I will give a small example that may be useful.
Namely, members
7thMoon,
locust, and you, have in yours avatars the first letters of yours signatures. Let us imagine that each of them tries to represent God. The letter L represents God, but it has two divine lines. So does the number 7. And the letter R, has an even more pronounced circular center, as the essence of God.
There are many nice depictions of the Holy Trinity, as much as our understanding can receive. It is necessary to believe in the Holy Trinity as Christians, as the holy fathers have conveyed to us, in situations where it led to martyrdom for them. Pope Martin, Maximus the Confessor, etc.
I never asked what is in Jesus that is God Himself. Jesus is not God in Himself only He is a child of the Father. I stated the fullness that was pleased to dwell in Him from the will of another is and remains the Father's Deity. I state God from true God not true God from true God The eternal life found in the Son is the Father. That the Father lives in Him as He Himself stated and they are one just as Jesus and those found in Him are one. I ask how is Jesus NOT all that the Father is since He and the Father are ONE?
But again how do you believe Jesus is "from" the Father as a Son if He has no beginning? As in true God from true God.
I asked if Jesus had a human body and a Human spirit what part of Him was God?
I asked what part of Jesus descended from heaven if NOT His own spirit?
Jesus calls the Father the only true God. If He always was and always was God how does this believe in one God for Jesus stated on the cross, "Father into your hands I commit MY spirit"?
Why would Jesus speak of another from Himself if it was His spirit?
If you love me, keep my commands.
16And I will ask the Father, and he will give you
another advocate to help you and be with you forever—
17the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him.
I pointed out the Father does not speak of that Spirit as another.
The Fathers promise, "In the last days I will pour out MY Spirit..."
Isn't it written the body is the temple of "The Holy Spirit"?
Again why would Jesus need to receive His own spirit from the Father? The Spirit the Father alone calls His own and the Father alone is the one Jesus states is the only true God. Thats NT,not creeds that state things that are so with a foundation of mystery.
Acts 2
God has raised this Jesus to life, and we are all witnesses of it. 33 to the right hand of God,
he has received from the Father the promised Holy Spirit and has poured out what you now see and hear
Those who listen and learn from the FATHER go to the Son. It should be clear to all the Holy Spirit is witnessing. As I stated I see the person of the Father, the only true unbegotten God. Jesus is HIS first begotten
Son. The beginning of the creation of God. The firstborn of all creation. The fullness of the Deity of the First and Last, His God and Father, was gifted to dwell/live in Him forever. He and the Father are one. Since He and the Father are ONE then He has to be is ALL that the Father is. Hebrews 1:3 The image of the invisible God not the invisible God. He is GODS Son and GODS Christ.
Rev 3:14 KJV
And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness,
the beginning of the creation of God;
proverbs 8
You think God created wisdom? Was He unwise before that point in time?
“The Lord brought me forth as the
first of his work
before his deeds of old"
I was formed long ages ago,
at the very beginning, when the world came to be.
24:When there were no watery depths, I was given birth,
when there were no springs overflowing with water;
25 before the mountains were settled in place,
before the hills, I was given birth,
26 before he made the world or its fields
or any of the dust of the earth
I was there when he set the heavens in place,
when he marked out the horizon on the face of the deep,
Then
I was constantly at his side.
I was filled with delight day after day,
rejoicing always in his presence,
For those who find
me find life
and receive favor from the Lord.
36 But those
who fail to find me harm themselves;
all who hate me love death.
The Christ is the most exalted, not David -God by His own authority appoints His Firstborn to Davids line and fulfills His promise to David, "I will establish his line forever, his throne as long as the heavens endure."
Because as Jesus Himself stated if the Christ was the Son of David then why does David call Him Lord as in the Lord stated to my Lord sit at my right hand "until" I make your enemies a footstool for your feet"
Psalm 89
And I will appoint him to be my firstborn,
the most exalted of the kings of the earth.
28 I will maintain my love to him forever,
Hebrews 1:6 -about the Son not just about the Christ-the one GOD created the creation through. The one GOD appointed heir of ALL things.
From your perspective why the need? I have shown you why the need.
And again, when he brings the firstborn into the world, he says, “Let all God’s angels worship him.”
I use reason and scripture that is all I have to give. I am not anyone in authority, but I do know My Lord and He knows me.
Feel free to ask Him if He's Gods Firstborn and has always been the Son.
"Can anyone explain the Trinty"
James 1:5
If any of you lacks wisdom,
you should ask God, who gives generously to all without finding fault,
and it will be given to you.
Those who could answer such questions about the trinity were driven out when their answers weren't liked.