These are some great scriptures that seem to make your point very well. However, if you are right, that the Messiah is "literally" YHWH himself, then the Y'shua of the renewed covenant writing is not the Messiah since he clearly stated that he wasn't YHWH. (I realize you are saying he's a part of YHWH but it's hard to understand what part, or how much of a part, etc., so please let me continue.)
And going forward a little, He fell on His face, and prayed, saying, “O My Father, if it is possible, let this cup pass from Me. Yet not as I desire, but as You desire.”
(Y'shua can not be YHWH if he's submitting to YHWH's will as if it were not his own)
And about the ninth hour Y'shua cried out with a loud voice, saying, “Ěli, Ěli, lemah sheḇaqtani?” that is, “My Ěl, My Ěl, why have You forsaken Me?”
(How does YHWH die first of all, but even before that cry out to himself, "Why have you forsaken me"?)
"For as the Father possesses life in Himself, so He gave also to the Son to possess life in Himself"
(Y'shua's receiving life from YHWH, so he can not possibly be YHWH himself)
“Of Myself I am unable to do any matter. As I hear, I judge, and My judgment is righteous, because I do not seek My own desire, but the desire of the Father who sent Me.
(This a very blatant delineation between YHWH and Y'shua. Y'shua is clearly submitting to YHWH, not himself. He can do nothing without YHWH, so he can't be YHWH. Also, he is claiming he was sent by the Father, which will make a lot of sense later in this expose).
And Y'shua said to him, “Why do you call Me good? No one is good except One – Elohim
“You heard that I said to you, ‘I am going away and I am coming to you.’ If you did love Me, you would have rejoiced that I said, ‘I am going to the Father,’ for My Father is greater than I.
(I can't see how Y'shua can be YHWH if he called YHWH his Father that is greater)
who, in the days of His flesh, when He had offered up prayers and petitions with strong crying and tears to Him who was able to save Him from death, and was heard because of His reverent fear, 8 though being a Son, He learned obedience by what He suffered. 9And having been perfected, He became the Causer of everlasting deliverance to all those obeying Him,
(Y'shua prayed to YHWH who could save him from death, he learned obedience, was perfected (wasn't always perfect). He could not have been the Almighty Creator).
I Corinthians 15:27-28
For “He has put all under His feet.” But when He says “all are put under Him,” it is clear that He who put all under Him is excepted.
28 And when all are made subject to Him, then the Son Himself shall also be subject to Him who put all under Him, in order that Elohim be all in all.
(Y'shua is subject to YHWH, so he can't be YHWH)
There are many other passages that communicate this point (and also some that seem to detract from it thus perpetuating the contradiction).
I wonder if we are missing something contained within the Hebraic concept of an emissary (Yes, I'm bring that up again
). Again, Yeshua's own words contradict (as well as many other passages in the renewed covenant) the idea that he is literally YHWH (in part or not). Y'shua was a servant of YHWH, sent by YHWH, which describes the role of a Shaliach well. For all practical purposes, Y'shua represented YHWH to a degree and in "legal terms" to the point he was YHWH to those he was sent to. The angel of YHWH represents YHWH to the point of "practically" being YHWH, thus you would not differentiate between the two. I don't think this is a concept is well known to the Western mind since it's practically never considered, but I could be wrong (it wasn't to my own mind until recently), but it does explains the apparent contradiction. You can resolve the problem (as I think you have) by making Y'shua a part of YHWH (a piece, scoop, whatever),
"He is a section/part/portion/segment of Yahuweh's power in human form."
or resolve the problem by making Y'shua a Shaliach of YHWH (a very special one at that). The million dollar question is which solution is more Hebraic and intended by the authors of the scriptures?
BTW, Shabbat Shalom!
Yeshua therefore said, "When you lift up the Son of Man, then you will know that I am He, and I do nothing on My own initiative, but I speak these things as the Father taught Me.