John 17:5
Now glorify me, Father, with you, with the glory that I had with you before the world began.
Scripure is clear, Aineo, that Jesus was a glorified being before the world began. Obviously Jesus wasn't an idea in God's mind, with verses like this in the Bible.
Also, Hebrew-speaking Christians also believe in the Trinity and Jesus's preexistence, so it's hard to believe all of this research of yours.