The trinity is beyond comprehension and understanding
This is dissembling. Did you really fall for that? Ha, silly you!
I am not interested in how an atheist justifies the trinity. This is a challenge for christian theists.
In fact the only answer they can give is " I know". And who am I to say they don't?
Me.
It is easy show that christianity cannot be reconciled with reality. However it is easier and more convincing to show that it is internally contradictory.
Christians worship Jesus
Christians worship "the god and father of Jesus"
Christians are polytheists.
The trinity is nothing more than a cosy conspiracy where christians pontificate about words they don't understand and can't explain so they can go on pretending to be monotheists.
It makes the overlapping generation doctrine sound rational.