Plato has nothing to do with this. Immaterialism is just a word. A word we use to describe the depictions and descriptions of God as told in scripture. Much like the word Trinity.
Plato has everything to do with it, as Tertuallian pointed out back in 200 A.D.
I know you are struggling with the concept that God is spirit (again just a word) which means he is without material
Except that 'spirit' is an English word. It's not in the original Hebrew and Greek. And I'm not struggling with it. Like Tertullian, I out and out reject it in virtue of the abundance of hard biblical evidence to the contrary.
Yet he can manifest himself and has power beyond your limited comprehension to do things, such as part the red Sea or cause the earth to stop rotating or create light without becoming material.
See Ex 15 where Moses said the waters parted by a blast of breath from God's nostrils, slowly over the course of an evening. An immaterial breath cannot push waters apart. It's a logical impossibility.
If God wanted to convey immaterial spirit instead of material wind/breath, why such language and documentation? Doesn't make sense - it doesn't make sense that a wise Teacher would (needlessly) present the truth to the human mind as a logical impossibility that a sane thinker would find unacceptable. I'm not saying I'm the only sane thinker, but consider atheists for example, if you gave them this choice:
(1) An immaterial breath/wind pushed the waters apart.
(2) An material breath/wind pushed the waters apart.
They'd consider it insanity to prefer 1 over 2.
And please don't object on the basis of direct revelation - as I too regard it as a higher authority than reasoning and exegesis.
Exegesis involves REASONING. If you came to your conclusion by revelation, fine, but then don't pretend it was reached by the biblical data.
The world around us shows us the power and glory of God, but does nothing to show us that God MUST be material as you see it.
Don't put God in your mental box. Scriptures tell us all the different ways God manifested himself. Yet it was Jesus himself, who spoke the most clearly about God.
Don't put God in a mental box? Anything goes? So we're back to the possibility of God defined as the flying sphaghetti monster?
Exegesis is pure chaos if it isn't constrained by reason.
Are angels immaterial or are they invisible?
Angels are material beings. Like the heavenly city, God tends to keep them hidden from us until we grow spiritually into maturity and thus see them face to face like Elijah, Jesus, David, and the rest.
I don't think God will be disappointed with me at all. This subject is not nearly as important as your denial that God is Holy. If there will be any disappointment from God then it will be with you because of your unscriptural stance on God becoming holy.
Can't legitimately praise God for something He already was from eternity. That would be like praising you for being born human.
That is far more damaging and far more unbiblical than this who material vs immaterial subject. You have strayed so far away from truth on that, that it makes you argument for materialism that much more unbelievable.
Almost all your posts take the form, "I"m right and you're wrong" - and thus never address my arguments. You provide no hard evidence for your conclusion, nor refute mine.