Trinity or Triune is not found in scripture. It is man-made! Are we to quit using these word as well? I don't think so!
The concept is real and words were given to describe it.
To say grace is irresistible is an oxymoron.
For it is by grace that we resist what we must resist.
Irresistible grace was a quick fix solution for a dilemma that they could not solve concerning the depravity of man as they knew it to be.
In turn... They did the exact same thing they saw the Catholic Church do with made up stuff to appear to have an answer for a problem.
A classic example of the RCC would be Immaculate Conception.
That was a quick fix solution in trying to explain to peasants how Jesus could have been born without a sin nature.
No one questioned it for a while.
Just like irresistible grace was not questioned later on by the TULIP people.
Irresistible grace is an equivalent of making God into being a seduction master.
But, to be seduced?
One must have something innate to your nature to accept it.
And, if that is so?
There goes "total depravity."
Living in well accepted error gives one a feeling of knowing what he is doing. False security.
Humility is the ability to be corrected, which can initially be destabilizing, until needed knowledge is gained.
That is why some hate correction. It destabilizes their life.
.......