Myth of Jesus, page-399

For to us a Child shall be born, to us a Son shall be given;
And the government shall be upon His shoulder,
For to us a Child shall be born, to us a Son shall be given;
And the government shall be upon His shoulder,
And His name shall be called Wonderful Counselor, Mighty God,
Everlasting Father, Prince of Peace.


Note: And His name shall be called = All future context.
You also need to address some questions here, but more so for yourself;
Trinity - The Father isn't Jesus and Jesus isn't the Father = The Father to BE here can't be the God and Father of Jesus, and not to mention, this verse in no way supports a pre-existent Jesus as it's future context.
So one would assume we have to think he is the Father of the firstborn from the dead just like Abraham the Father of many.

Mighty God - To BE and not The Almighty God the Most Highest which is from whom and how Mary conceived, who was to be a Father of Jesus. Showing God & Father and Spirit are ONE.
Surely you don't believe Jesus was conceived due to his own actions and not to mention, He is NOT yet these things here and not sent into the world as in after his baptism.
I assume you know at John 1:18 that this is referring to where Jesus is now, in the bosom of the Father.
But the truth of the matter in the wording of this verse from the Greek, Jesus is referenced to as the only begotten God = exalted to this position, once wasn't a god.
Jesus himself tells us, John 10:35 there are other god's and 1 Cor 8:5-6 For even if there are so-called gods whether in heaven or on earth, as indeed there are many gods and many lords, 6But to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him.

So the verse here identifies God and Father as one in the same as in singular.
You will note also, ALL THINGS are OF God the Father, who as I may have covered created all things on account of, by reason of, for the sake of, because of Jesus and has now put all things into his hands, hence the meaning of the last part of this verse and we also have to come via Jesus. (we by him).

The rest of the Isa verse shouldn't need explaining.
So this Isa verse does nothing to support the trinity
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Now then,.... the Emmanuel verse = God with us.
I say from a range of Bible verses, God is a Spirit and that Spirit is the Holy Spirit = One in the same.
But even if you don't accept that, you have got to accept he received the Spirit OF God without measure and that the Father dwelt in him.
So we have the Spirit of God and the Father dwelling in Jesus = God with us and in the flesh of Jesus = Two totally separate identities.
Now the Father could only dwell in Jesus via the Spirit = Spirit and Father and God are ONE in the same identity.
Above we identified that the God and Father are the same, so therefor again we see as the Holy Spirit come from God that the Holy Spirit is clearly the Fathers = one in the same.
So Emmauel does not support the trinity.