Acts 20:28
So watch out for yourself and for the whole flock in which the Holy Spirit has made you overseers to guard the church of God, which he purchased through his own blood!
Contrary to popular belief, the holy spirit is not a person in and of itself.
The Father and the Word who became Christ are persons -and the spirit of God/holy spirit is essentially that by which they do things (and, technically, that which the two collectively "are" -but let's focus on the doing of things).
The most simple way to understand it is that the Father and Christ are WHO -and the spirit is HOW.
The following seems to personify the holy spirit -the helper/comforter -as if a separate person -but notice the last part of verse 18....
16And I will pray the Father, and He will give you another
[e]Helper, that He may abide with you forever—
17the Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you.
18I will not leave you orphans;
I will come to you.
Christ was about to leave them in the flesh, but by that comforter HE would come to them. The rest -spirit of truth, etc. refers to the Father -who would be IN THEM when they received the holy spirit OF GOD (defined in scripture as a spirit of power, love and of a sound mind) after repentance, baptism and laying on of hands.
Another example... The following clearly states that it was the Word who became Christ that did the actual creating of all things...
1In the beginning was the Word, and the Word was with God, and the Word was God.
2He was in the beginning with God. 3All things were made through Him, and without Him nothing was made that was made.
..and the following is HOW he did things....
2And the earth was without form, and void; and darkness
was upon the face of the deep. And
the Spirit of God moved upon the face of the waters. 3And God said, Let there be light: and there was light.
The next mention of the spirit of God in page order is when -by his spirit -God granted knowledge and skills in workmanship to one (much like the instantaneous downloading of skills in "The Matrix")
Ex 31:2See, I have called by name Bezaleel the son of Uri, the son of Hur, of the tribe of Judah:
3And I have filled him with the spirit of God, in wisdom, and in understanding, and in knowledge, and in all manner of workmanship,
4To devise cunning works, to work in gold, and in silver, and in brass,
5And in cutting of stones, to set
them, and in carving of timber, to work in all manner of workmanship.
Getting back to the comforter/helper.... notice what Christ says after verse 18....
18I will not leave you comfortless: I will come to you.
19Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also.
20At that day ye shall know that I am in my Father, and ye in me, and I in you.
The holy spirit is not mentioned there as if it is another person -because the holy spirit is HOW.