I've found there's little chance of changing the mind of a Trinitarian. Like so many other Christians, whether it's about Trinity, pre-trib, or any other issue, they believe what they've been taught, consider it truth, and then - CASE CLOSED. So good luck finding truth in this matter because...
"The greatest impediment Christians have obtaining truth is when they think they already have it."
In my view it's an abomination to claim Jesus is fully God and fully man at the same time. The graph Amir posted in this thread is nonsense and precisely what Trinitarians teach. It's crazy - Jesus IS God but Jesus IS NOT GOD. Jesus IS the holy spirit, but Jesus is NOT the holy spirit. God is Jesus but God IS NOT Jesus. God is the holy spirit but God is NOT the holy spirit. The holy spirit is Jesus but the holy spirit is NOT Jesus. The holy spirit is God but the holy spirit is NOT God. That is absolute absurdity at its finest!
The symbolism of the word Emmanuel is reflected in several scriptures that proclaim the promise of the presence of God, especially during a time of fear and crisis. God being with Israel is often spoken of in the Old Testament. He said to Moses in Exodus 3, "I will be with you."
God being with His disciples is a theme in the New Testament.
"I can do all things through him who gives me strength."
"Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything that I have commanded you. And remember, I am with you always, to the end of the age."
Emmanuel or Immanuel doesn't mean God became a man, or that Jesus is God. The word is used symbolically to imply God is with us, AKA - God is in Jesus. 'God is with' - individuals, with Israel or with one of Israel's kings, etc. - just like this verse in Isaiah Chapter 8.
Take counsel together, and it shall come to nought; speak the word, and it shall not stand: for 'God is with us'.
James Strong was a Trinitarian and that's reflected in many of his works. In Hebrew the word Emmanuel is TWO words. 'el' - a common word or prefix which means..
god, god-like one, mighty one
mighty men, men of rank, mighty heroes
angels
god, false god, (demons, imaginations)
God, the one true God, Jehovah
mighty things in nature
strength, power
And the word...
Immanuel
Which means...
Immanuel = "God with us" or "with us is God"
Symbolic and prophetic name of the Messiah, the Christ, prophesying that He would be born of a virgin and would be 'God with us'
NOTE Strong's Comment
STRONGS H6005:
Abbreviations† עִמָּנוּאֵל proper name, masculine Immanuel (with us is God); — י׳ Isaiah 7:14 van d. H. Baer; עִמָּנוּ אֵל Gi; — name of child, symbolizing presence of י׳ to deliver his people (on interpret. see Commentaries) — עִמָּנוּ אֵל Isaiah 8:8, 10 is declaration of trust and confidence, with us is God ! (compare Psalm 46:8; Psalm 46:12 [Psalm 46:11]); see H5973 עִם.
In this pic, Strong's QUOTES THE HEBREW-CHALDEAN LEXICON and makes the comment, "a symbolic and prophetical name of the son of Isaiah the prophet -Then he says - [THIS IS UTERLY FALSE...,]"
The issue of Isaiah 7 - Emmanuel being the prophesied Jesus - is riddled with holes. Emmanuel is the name of the middle son of Ahaz. He and his sons and the impending invasion of Assyria is the context of Isaiah 7. Isaiah was speaking about Ahaz's middle son Emmanuel. in verse 17, the word 'virgin' is better translated, "young woman". In the interlinear - the textus receptus - which is ONE of the documents the KJV translators used, (all but one of the KJV translators were Trinitarians) it uses the term 'the·damsel'.
You can learn a lot from Dennis Bratcher about this. I doubt anything would ever change your mind.
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"While there is no specific point made here in Isaiah 7 about the child, it is obvious that his mention here, especially with such a significant name, was part of the message of Isaiah to Ahaz. And the fact that the names of two successive children in these two chapters did play significant roles in Isaiah’s message clues us to an important part of the theology at work in these chapters."
http://www.crivoice.org/immanuel.html