I really hesitate to bop in, but you inadvertently got thrown with your misgivings and misunderstanding to the Charismatic board to lodge your complaints.
To me, on an historic basis, the term "heretic" is a Roman construct, conveniently fueling the Jesus wars that made a mockery of the Church, and Jesus' only new commandment. It's a convenient wall to prevent dialog and understanding. On these forums, I've been called a "Pelagianist..." I had to look it up. It goes back to the days that the Maryolator Augustine, great (meaning "accepted by Rome") Christian theologian that he was, charged Pelagius with heresy, and won the upper hand, though the council never actually ruled against Pelagius. History shows that the "heretic" Pelagius left the West, and there is good evidence that he brought the gospel of Jesus Christ even all the way to Japan. In the meantime, he was dismissed by Rome, and all our "historians" as a "heretic."
Let me walk lightly, in the area of the "immutability" of the Godhead...Do you believe Jesus died? Do you believe he "gave up the Spirit?" Do you believe He commended His Spirit to the Father, as He said on the cross...or was he being strangely symbolic, since all that is impossible if Jesus did not at any point relinquish immortality. His sacrifice, in fact, becomes mute...because God cannot suffer, be beaten or bruised on anyone's behalf...
Do you agree that the flesh is anything but immutable? Well, then, do you believe that the Word was made flesh, and dwelt among us? Do you believe Jesus clothed Himself with mortality?
Briefly, we believe, because Jesus Himself said so, that He did what He did on the earth because He was the son of Man (e.g. the Son of Adam, see Ezekiel and the prophets)...He was Adam's heir and waged Adam's war to restore Adam's dominion. He the last Adam, and that is no error. We also teach that it could not have been otherwise, because the "gifts and the calling of God are without repentance."
Your theories, in fact, lead to a heresy that is strangely Muhammedan. Their 'Isa (Jesus) could not possibly die. As I see it, your own dogma has created an immortal Jesus Who is incapable of dying, and therefore unable to die in our place...to redeem us. You lessen the offering.
The Hypostatic Union addresses everything regarding the 2 Natures in Christ, the Trinity and Immutability. I put this together back on the old CARM forums for those who denied Christ was fully God and kenosis false teachers, unitarians, JW's etc......
Jesus is a person. (1 Tim 2:5)
Jesus, the Person, has two natures- Divine and human (John 1:1, 14, 1 Timothy 3:16): Divine and human. This is the Hypostatic Union.( Col 2:9, Heb 1:3,2:16)
The Communicatio Idiomatum (Communication of the Properties) states that the attributes of His Divine nature and human nature are both ascribed to the one Person of Jesus. So Jesus can exhibit attributes of Divinity (Omnipresence, Omniscience, Omnipotence, . John 2:23, 3:13, 8:58, He was prayed to in Acts 7:59, John 14:13, He was is worshiped Matt 2:2:11, Rev 5:13-14) and at the same time exhibit attributes of His humanity( He was tempted, ate, prayed,wept, grew in wisdom and stature,was anointed,was baptized, the Father was greater, didn’t know the day or the hour of His Return, He cried My God my God why has Thou forsaken Me, He died etc.). The communicatio idiomatum does not mean that any part of the Divine nature was communicated to the human nature.
The Man(anthropos) Jesus is what we perceive (if we were there 2000 years ago in Israel) and through the Man we encounter the Divine nature (Jesus knowing all things, is on earth while in heaven, answers prayer, forgiving sins, etc.).
The Person of Jesus will always be both Divine and human. (John 1:1,14,20:28, 1 John 5:20, 1 Timothy 2:5) Those who deny this fact are the spirit of antichrist. (1 John 4:1-4,2 John 7)
The Divine Nature is within the Trinity.(Father, Son and Holy Spirit)
Since the Person of Jesus claims the attributes of Divinity(John 3:13,8:58,Matthew 9:2,12:8), then the Person of Jesus is a member of the Trinity.( John 14-16, Math 28:19)
Anything said of either of Christ's two natures applies to the one Person of Christ, so that is how it is said that Christ died on the cross. The term "hypostatic union" refers to the two natures united in the one Person, so anything said of those two natures in the one Person applies to the whole Person. So we see that the Person of Christ is both God and man. The phrase hypostatic union was adopted by the fifth general council at Constantinople, 533 AD. That council declared that the union of two natures is real (against Arius), not a mere indwelling of God in a man (against Nestorius), with a rational soul (against Apollinaris), and that in Christ’s Divine nature remains unchanged (against Eutyches).
hope this helps !!!