I personally think the crux of the disagreement here again boils down to the language Lee used and the emphases he employed – rather than on whether he was patently wrong/heretical/etc…
God is spirit. Always has been, always will be. Its how he does that cool thing of being everywhere at once.
The Son of God, (aka the “second Person” of the Trinity), has eternally existed and has eternally co-existed with the other “two Persons” of the Trinity. Same with the Holy Spirit (aka the “third Person” of the Trinity).
But God was not, in eternity past, human. He was not “flesh.” Nor did humanity have any “divinity” as such.
When Christ came in the flesh, he brought divinity into humankind. But he was flesh – which meant he was limited spacially. His being had defined limits of time and space. God had never experienced this before. So, we should be careful about how broad we make the scope of statements like “God is unchangeable.” It doesn’t make that phrase incorrect to say that it has a particular scope.
Further, the actual experience of a human life, a life of temptation and of limitation, was never “part of” or experienced by God prior to Christ’s incarnation and life.
When Christ incarnated, humanity and divinity were merged – but only in this physical being, Jesus, as he walked and moved on earth in time and space.
In resurrection, humanity – personified by ADAM – was merged with divinity as spirit, not just in the Person of Jesus, the physical being in time and space. No “entity” came into existence that was not already existing. There was just something that was “added” to that entity, which is spirit. There can be unintended adverse effects of using this language, but I think it is apt to say God went through a “process” and that humanity was “added” to God. What that means to me is that I do not have a High Priest that cannot be touched with a feeling of my weaknesses. Inside me is God – God as Spirit. It’s the same God who took on human form and went to the cross for me. Does that confound the second and third persons of the trinity? I don’t know. But the scripture hasn’t given me any commands not to “confound persons,” so I am not too concerned. Its just what the Bible seems to be teaching.
As always, I’m open to being taught, reproved, corrected, or instructed differently.
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Peter