He was first in that He was planned before the foundations of the earth Eph 1:4. God was not going to create mankind without Jesus. IE Without Him needing to be God the Son and go to the cross.
"According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:"
In Ephesians 1:2 Paul says, "Grace be to you, and peace, from God our Father,
AND from the Lord Jesus Christ."
God had no intentions to create mankind without Jesus. That doesn't prove anything about Trinity. You talk about heresy, no matter how much you try to shoehorn it into the Trinity doctrine, Jesus is NEVER called "God the son." But nice try, I bet it's not the last time.
Blasphemy against Him is rejecting His message. His message is Jesus John 15:26. Rejecting Him is rejecting Jesus.
John 15:26...
But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:
What's your point? Are you saying non-Trinitarians reject Jesus as Messiah and the message of the cross and resurrection? It seems that's the direction you're always heading in.
Have you noticed what Jesus said in verse 20 of John 15? Probably not because that verse debunks the co-equality part of Trinitarianism. The trinitarian cop out on that one is resorts to, "that's because Jesus was fully God AND fully man at the same time!"
V. 20 "Remember the word that I said unto you, The servant is not greater than his lord."
BAC quoted these scriptures in post # 15. I gave you Isa 9:6 in my post # 2 which links the 'Son and Messiah' to 'almighty God'.
The passage does NOT say almighty God. All you're doing is adding more falsity to this.
For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace.
If this verse is translated properly, then Trinitarian Christians have a real problem. The KJV and other translations - mistranslates Isaiah 9:6.
The word translated everlasting is actually 'age', and the correct translation is that Jesus will be called "father of the [coming] age."
In the OT and NT culture, even today! We use the word FATHER for anyone who began anythng. In the OT Jubal is called the Father of musical instruments, "the father of all who play the harp and flute." (Gen. 4:21)
Jimmie Brown is called the, "Godfather of Soul." John Mayall is called, "the Father of British blues." etc.
The point is that 'FATHER' was often used for the first one to do something or was important in some way. Since the Messiah will be the one to establish the age to come, raise the dead into it, and rule over it, he is called "the father" - of the coming age.
Isaiah is not saying that the Messiah is the same person as God the Father.
Mighty God.
Any man who is acting with God’s authority can, and is at times, called 'god'. In fact the interlinear words it like this, "the one counseling - El-Masterful - Father of Future - chief of well-being."
The word God is...
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