Actually the doctrine of the holy trinity is quite understandable - Christ is and always has been the Second Person of the Trinity, since the beginning of time... as He was in Mary's womb and througout his childhood. There was no time ever when He was not GOD.
Your thinking is what happens when you get religious instruction from bible-achool types - instead of actual saints and martyrs.
Paul penned the saints were chosen before the foundation of this world. (Age)
It is vulgar for man to claim he has the authority let alone the credibility to deem anyone a saint.
Peter penned there are three different Heaven/earth worlds. (Ages). Genesis 1:1, and verse 2 describe the first heaven earth age.. that is when Lucifer decided he would be god and was cast down.. the children that were loyal to the Heavenly Father are the saints.. according to scripture the majority followed Satan.. that is why the devil is tossed out of heaven to play the role of Jesus..
I can document from scripture everything I typed.
What does the Bible say? Isa. 55:8 "As the heavens are higher than the earth, so are My ways higher than your ways and My thoughts than your thoughts.
Jesus was/is wholly man and wholly God. God has been alive forever. Eternally. And will remain so eternally. Man cannot comprehend these things fully. It is beyond our senses and reasoning. God even says so. But maybe you are special.
“There was no time ever when He was not GOD.”
Then Mary logically couldn’t be the mother of his godly nature, since that pre-existed even her own birth. You can’t be the mother of something that existed before you did.
If you can understand your God, you need a new God. Yours is not big enough.