You are correct, the trinity (sometimes also called the Godhead) is not to be understand, nobody can, no analogy applies, but it is true, just believe it, the Scriptures are full of it.
But there are well meaning Christians who reject the Godhead because they can not understand it and insist to understand, to no avail.
almost but not quite my friend . Those who reject the diety of Christ are not well meaning christains at all .
Now it is very TRUE that it sure can be hard to be understood .
but even when i clearly lacked the understanding , i did not go around
Denying the fact that The Word was G od . You see folks that do that
have a serious deadly problem my friend .
While its very true one who might not understand it , is not destined to hell at all .
IT is also very true THOSE WHO TWIST SCRIPS do so unto their own destruction .
So let that be clearly understood .
Some things may not be clearly understood in the bible and more so at the start is the case .
But one THING that all had better clearly understand is
WE DONT TWIST SCRIPS peroid . BELEIVE what is written EVEN IF it is not understood .
Understanding will come in time . BUT NEVER TWIST and omit what was written
to try and follow a teaching of men gone wrong .
SO allow me some parting words . IN the beginning was the WORD
and the Word was with GOD , all things were created by HIM
and without HIM was nothing made . And the WORD was GOD .
NOW THAT A FACT . However i do understand that might not be understood clearly and specially at the first .
But to twist that , IS DEADLY dangerous. To deny that is to deny HE who said
I AM ALPHA and OMEGA , the First and the last .
And i turned to see the voice that spoke to me and i seen one who had the appearnce as the Son of God .
And his first words to john were , fear not , I AM THE FIRST and the LAST .
Just a dire necessary reminder for us all , TO NOT TWIST anything written but rather beleive it
and pray for understanding .