The Promise of the Father is the baptism of the Holy Spirit which is given by Jesus Christ.
And being assembled together with them, He commanded them not to depart from Jerusalem, but to wait for the Promise of the Father, “which,” He said, “you have heard from Me; for John truly baptized with water, but you shall be baptized with the Holy Spirit not many days from now.” Acts 1:4-5
And he preached, saying, “There comes One after me who is mightier than I, whose sandal strap I am not worthy to stoop down and loose. I indeed baptized you with water, but He will baptize you with the Holy Spirit.” Mark 1:7-8
Jesus Christ pours out the Holy Spirit.
Therefore being exalted to the right hand of God, and having received from the Father the promise of the Holy Spirit, He poured out this which you now see and hear. Acts 2:33
JLB
The Father calls that "MY SPIRIT" - There you go the testimony of God
Mary conceived by that Spirit since you think the Spirit is a person why doesn't Jesus call the Holy Spirit His Father?
Fathers Promise=>“’In the last days, God says, I will pour out
my Spirit on all people. Your sons and daughters will prophesy, your young men will see visions, your old men will dream dreams.
On one occasion, while he was eating with them, he gave them this command: “Do not leave Jerusalem, but wait for the gift
my Father promised, which you have heard me speak about.
“Here is my servant, whom I uphold, my chosen one in whom I delight; I will put
my Spirit on him, and he will bring justice to the nations.
God does not call that Spirit another not a person but "My Spirit"
Matt 10:20
Jesus=>for it will not be you speaking, but the
Spirit of your Father speaking through you.
I don't see the Spirit as a person but as the Spirit of my Heavenly Father who I believe to be the only true God.
Since the Spirit also acts on the mind and will of Christ then the presence of Christ can be in the believer via that Spirit.
But when he, the Spirit of truth, comes, he will guide you into all the truth. He will not speak on his own;
he will speak only what he hears, and he will tell you what is yet to come.
We know Jesus called Saul. So whose words did the Spirit speak?
While they were worshiping the Lord and fasting,
the Holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.”