I have always viewed the "mind of the Spirit" as the Father. So the Spirit as a distinct person of the Godhead is to me in error. Jesus has His own mind apart from the Father and is a distinct person in my eyes. But God's own Spirit would have Gods very own nature. Deity -the one and only eternal Holy Spirit. The Spirit of truth.
He Who Searches Our Hearts Knows
the Mind of the Spirit—Romans 8:27
1 Corinthians 2
For who among men knows the thoughts of a man
except the man's spirit within him? In
the same way no one knows
the thoughts of God except the Spirit of God. We have not received the spirit of the world but the Spirit who is from God, that we may understand what God has freely given us.
John 16:12-15
“I have much more to say to you, more than you can now bear. 13But 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. 14He will glorify me because it is from me that he will receive what he will make known to you. 15
All that belongs to the Father is mine. That is why I said the Spirit will receive from me what he will make known to you.”
Romans 8:26-27
The mind of the Spirit - according to the Will of "God" not on His own
In the same way, the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans. 27 And he who searches our hearts knows the mind of the Spirit, because the Spirit intercedes for God’s people in accordance with the
will of God.
But that shouldn't surprise you as God states so. The Father alone does not speak of "His" Spirit as another.
Acts 2:17
“’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.
The testimony confirms this as the Spirit sent in "Jesus's name proceeds from the Father.
Acts 2:33
Exalted to the right hand of God, he has received
from the Father the promised Holy Spirit and has poured out what you now see and hear.
John 20:21
The Father sent Jesus.
Again Jesus said, “Peace be with you!
As the Father has sent me, I am sending you.”
From the scroll of Isaiah that Jesus read and was fulfilled at that reading - the Spirit of the one who sent Him
Isaiah 61
The Year of the LORD’s Favor
1 The
Spirit of the Sovereign LORD is on me, because the
LORD has anointed me to proclaim good news to the poor.
He has sent me to bind up the brokenhearted, to proclaim freedom for the captives and release from darkness for the prisoners,
2 to proclaim the year of the LORD’s favor and the day of vengeance of our God, to comfort all who mourn,
And again Gods testimony.
Matthew 12:18
"Here is My Servant, whom I have chosen, My beloved, in whom My soul delights. I will put
My Spirit on Him, and He will proclaim justice to the nations.
Matt: 10
Jesus-
18On my account you will be brought before governors and kings as witnesses to them and to the Gentiles.
19But when they arrest you, do not worry about what to say or how to say it. At that time you will be given what to say,
20for it will not be you speaking, but
the Spirit of your Father speaking through you.
1 Corinthians 8:6
So Paul didn't forget to honor the "person" of the Spirit
yet for us there is but one God, the Father, from whom all things came and for whom we live; and there is but one Lord, Jesus Christ, through whom all things came and through whom we live.
And neither did the Host of Heaven
New International Version Rev 5:13
Then I heard every creature in heaven and on earth and under the earth and on the sea, and all that is in them, saying: “To him who sits on the throne and to the Lamb be praise and honor and glory and power, for ever and ever!”
The Father, The Father Living in the Son, The Fathers Spirit =One Deity who is God
The Son is all that the Father is for in Him all the fullness was pleased to dwell and He and the Father are "One"- United in that Deity. By that Deity Jesus performs the "Fathers works at Will just as the Father Himself" A Son who is called Mighty God. A Son who has a place on His "Fathers" throne. Our Lord Jesus Christ, the one who purchased us by His blood for His God and has made us a kingdom and priests to serve His God and Father,