In the passageAre you saying this: "Lord" = Father; "Spirit" = Holy Spirit; "messenger of his presence" = Jesus Christ? So in Isa 63, "The Spirit of the LORD" = the Father; "his holy Spirit" = Holy Spirit; "the angel of his presence" = Jesus (who is the Spirit)? This would say to me, the spirit of the Father and His holy Spirit are not the same Spirit, if the Father, who is Spirit, is not the holy Spirit, and the holy Spirit is not the Father who is Spirit? Never mind that Jesus is also the Spirit.
"Christ is the Word, but he is not the Holy Spirit" How so? If Jesus is the Spirit (ESV- 2 Cor 3:17 "Now the Lord is the Spirit.."; 3:18 "..the Lord who is the Spirit"), but is not the holy Spirit's Spirit (Acts 2:4 "..filled with the Holy Spirit and began to speak in other tongues as the Spirit gave them utterance"), then are you saying there are more than one Spirit?
Here is more confusion, Act 2:4 "And they were all filled with the Holy Spirit and began to speak in other tongues as the Spirit [which Spirit? The Father's Spirit, the Son's Spirit, or the holy Spirit's Spirit?] gave them utterance." Either the holy Spirit is the Spirit, or we do not know who the the word "Spirit" is referring to. Then on top of that we have Act 2:17-18 "..God declares, that I will pour out my Spirit [the Father is Spirit] on all flesh..in those days I will pour out my Spirit [the Father is Spirit], and they shall prophesy." Is this the Father's Spirit, or is it the holy Spirit's spirit? You seem to be saying to me, the Father who is Spirit is not pouring out His Spirit, but pouring out the Spirit of another (the holy Spirit), who the Father is not, and therefore the holy Spirit is not the Father's to pour out, but belongs to the holy Spirit who is God all on His own, and it would be up to the holy Spirit to pour out His own Spirit? Confusing, who is who, what is what! Again, How can the holy Spirit be "his holy Spirit" (the Father's holy Spirit Isa 63:10) if the holy Spirit is God all on His own and is not the Father, and the Father has his own Spirit? How can God (the Father) be head of God (the holy Spirit) who has never changed, or become man? It says the Father is pouring out His Spirit (pour out my Spirit), but are you saying He is not pouring out His Spirit, but the holy Spirit's Spirit? How many Spirits are there? And why aren't they one Spirit? And if they all are the same Spirit, then what, how are they separate in context of scripture? Sounding a lot like explaining the 3-in-1 God.
Back to Isa 40:18-22. This is what I was looking to understand, is how you apply Isa 40:18-22 to your doctrine.
How does three persons solve Isa 40:18-22; how does the Father and Son fit into what Isa 40:18-22 is asking?
And If you say the Father, Son, and holy Spirit are the Spirit of God in Gen 1:2, than "who" and "what" is God's image?
It says it is also explained in Genesis (Isa 40:21). And He made two in His image, but how did He make them, and how does a "what," and a "who" fit into that? Do you know?
Which of the three are the "what," and/or the "who," and on top of that, when the answer is only referring to the Spirit of God (verse 22; being the image of another who is not part of the answer)? There is only one "who" that is the answer, and only one "what" that is the answer, not three. Why is the Holy Spirit referred to as a image (liken, likeness, compare) of God, and a "who," and a "what"?
Your answer causes more questions, than answer (actually, I still don't know what your answer is).
Isaiah 63:7–14 (LSB) — 7 I shall bring to remembrance the lovingkindnesses of Yahweh, the praises of Yahweh, According to all the ways that Yahweh has dealt bountifully with us, And the abundant goodness toward the house of Israel, Which He has dealt bountifully to them according to His compassion And according to the abundance of His lovingkindnesses. 8 And He said, “Surely, they are My people, Sons who will not deal falsely.” So He became their Savior. 9 In all their distress He was distressed, And the angel of His presence saved them; In His love and in His mercy He redeemed them, And He lifted them and carried them all the ancient days. 10 But they rebelled And grieved His Holy Spirit; Therefore He turned Himself to become their enemy; He fought against them. 11 Then His people remembered the ancient days, of Moses. Where is He who brought them up out of the sea with the shepherds of His flock? Where is He who put His Holy Spirit in the midst of them, 12 Who caused His glorious arm to go at the right hand of Moses, Who split the waters before them to make for Himself an everlasting name, 13 Who led them through the depths? Like the horse in the wilderness, they did not stumble; 14 As the cattle which go down into the valley, The Spirit of Yahweh gave them rest. So You led Your people, To make for Yourself a glorious name.
You have Yahweh, the angel of his present = Jesus Christ, and the Holy Spirit
The trinity
See evidence on board that the angel of Yahweh is the pre-incarnate Christ who is God and also called Yahweh
one example
Exodus 3:2–7 (LSB) — 2 And the angel of Yahweh appeared to him in a blazing fire from the midst of the bush; and he looked, and behold, the bush was burning with fire, yet the bush was not consumed. 3 So Moses said, “I must turn aside now and see this marvelous sight. Why is the bush not burned up?” 4 And Yahweh saw that he turned aside to look, so God called to him from the midst of the bush and said, “Moses, Moses!” And he said, “Here I am.” 5 Then He said, “Do not come near here. Remove your sandals from your feet, for the place on which you are standing is holy ground.” 6 He said also, “I am the God of your father, the God of Abraham, the God of Isaac, and the God of Jacob.” Then Moses hid his face, for he was afraid to look at God. 7 And Yahweh said, “I have surely seen the affliction of My people who are in Egypt, and I have heard their cry because of their taskmasters, for I know their sufferings.
Note Angel denotes a messenger