Never is the confused state of mind more abundantly demonstrated than when it seeks to clarify a concept without particulars.
The concept of HOLY SPIRIT is one of identity.
If we remove the descriptive "HOLY" from the noun "SPIRIT" and do an inspection of the particulars it is most revealing.
What makes something/anything "holy"? Why, it is set apart from others of its kind for SPECIAL purposes.
In what way can an invisible persona be said to have others of its kind from which it can be singled out as "special"?
My personality has facets which are manifestations of how I react and interact with outside/internal situations.
Let us posit that God is a person with a personality for the sake of this discussion.
When God gives SPECIAL attention to the needs of his creatures wouldn't His personality be manifest in a SPECIAL way which is unlike the attention he gives to those whom He chooses not to aid?
For example, you show a different attitude and behavior towards your own children than you do to your neighbor's brats.
When God's "own" need help and He is disposed to help those in need---wouldn't he manifest that "help" with a SPECIAL demonstration of aid?
How is this not "HOLY"? The paraclete is aid to those in need. A bottle opener is a "helper" in one way and personal encouragement is a "helper" in another situation.
As far as the designation of "Spirit" we are left with the nature of beingness which is not substantial. Which is to say we can only define "spirit" in metaphors, similes and literary contrivances since we cannot measure spirit in any tangible way.
Now, having demonstrated all the above; let me say this.
Since we cannot ever apply reasonable standards of investigation and discovery to the reports in Scripture which concern HOLY SPIRIT, aren't we left with mere conjecture, speculation and predisposition toward comfortable orthodoxy to color our conclusions?
In other words, nothing can be proved using the bible. Ever.
It is a buffet table spread with imaginings, reports, hearsay, speculation and assertion and we reach out and decorate our sald bowl with whatever suits our personal tastes.
Nothing substantial can ever be said or settled beyond mere persiflage.