When we read of the Spirit doing this or that, we should include all references to this 'feature' of God - is it a person, a force, a power, an influence or what?
We should begin with the bible and then use that revelation to compare other ideas against - not the other way around. (having an idea or tradition and looking for biblical support for it)
10 these things God has revealed to us through the Spirit. For the Spirit searches everything, even the depths of God. 11 For who knows a person's thoughts except the spirit of that person, which is in him? So also no one comprehends the thoughts of God except the Spirit of God.
- There is no reference to a person in this passage.
- The analogy provided speaks of the 'spirit of man' and the 'Spirit of God' - neither push us in the direction of a separate 'person'. Is our spirit separate from who we are? Then by analogy of the text, neither is God's spirit separate from Him. (God is defined as the Father by Jesus himself)
- We have several verses that speak of the spirit of truth or wisdom, spirit of Zerubbabel, spirit of Pul king of Assyria, spirit of glory, spirit of grace and supplication, spirit of judgment and a spirit of fire, spirit of truth and the spirit of falsehood, spirit of despair - none of these are a separate 'person', but a means of expressing the quality God is imparting or inherent in the individual.
because I know that through your prayers and the provision of the Spirit of Jesus Christ, my distress will turn out for my deliverance. Phil 1:19
We might ask what is the 'Spirit of Jesus Christ'? (Not who)
God is the great Provider. All good comes from Him. All truth, love, kindness, grace etc is His holy provision. Jesus, as the exalted son, has accomplished his mission by being subject to - a person? Or the power, influence, grace, love of God delivered via the spirit OF God into Jesus' heart and mind - into his emotions and intellect, his passion and logic.
It is this 'nature' that Jesus expressed consistently and perfectly (even against severe trial and temptation) that IS the 'Spirit of Jesus Christ'. Not a sperate person that told him what to do, but the presence and provision of God to enable his success.
The holy spirit is simply the expression of God that enables us to see with God's eyes and His mind the things of Godly life and relationship. Jesus also was given this spirit at baptism. Why? Was it just a token gesture for those watching? Was it just a confirmation for Jesus that his Father was with him? No, not such a trivial witness. Without this spirit OF the Father, he could not have succeeded in his mission of living without sin and heading to the cross in humble and gentle obedience to his Father's will, and suffer the humiliation of those (his own people) who hated and wanted him dead and those who killed him.
This same spirit of God that allowed him to submit his will to the Father's. Having his own will, which obviously differed from God's - brought about by trial and temptation, shows that another spirit was influencing him for pride and self-centred thinking leading to actions and/or potential sin. He resisted this by surrendering to the supplied influence for good. Jesus was not controlled by God, but willingly led by God.
This same 'Spirit of Jesus Christ' and Spirit of God that dwells in us as a gift in this life. (a deposit only - the full transformation will occur at our change to immortality)
who is a first instalment of our inheritance, in regard to the redemption of God’s own possession, to the praise of His glory. Eph 1:14
who is from the Gr. ho meaning which, what or that - not who.
For it is God who works in you to will and to act on behalf of His good purpose. Phil 2:13
Notice the influence to will and act - the thoughts and the works. This is exactly the same as the experience of Christ - God working in him to will and act for His glory.
The insistent translation of referring to the spirit as he, him, who etc is a bias forced by a traditional approach to the nature of God's spirit and not from the text. This has entrenched such a view of personhood that was never understood, expressed or taught by the apostles. It wasn't until the so-called 'church fathers' arrived that this teaching became commonplace and replaced the apostolic teaching that Jesus provided to them to begin the church with.
As the question correctly pondered, 'verse 11 gives the impression that the Spirit of God is an intrinsic part of God, just like the spirit of a person is an intrinsic part of a person'. There is no separate person the Holy Spirit (which has no name) but the very essence of God - who is invisible, spirit and needs to influence matter by His Holy nature - the spirit IS that expression and extension of God's being that may connect with created humanity and ALL His creation in ways yet to be comprehended.
With regard to the query about, 'searching the depths of God' etc. This can be readily understood as the believer is granted, through God's spirit dwelling in /with them, access to the innermost expression of who God is. His love, His grace etc, are not some mysterious secret, but are revealed into the believer so that they too may be an expression of God in their lives - as a son or daughter should be. Not that we have to somehow 'work out' what we are supposed to live like - this is placed within us by the presence of God in His spirit working with our spirit.
(To imagine that an omniscient 'God the Holy Spirit' person is searching out the depths of His omniscient Himself is rather absurd)
Without this holy spirit in us, God would make no sense at all to our default carnal nature full of deception and all the spirit of the 'world' which we (used to) live by. So His spirit 'searches out' God's ways and allows us to 'comprehend' a better way to live that is sacrificial and giving, rather than selfish and getting.
These considerations of the scriptures and the Holy Spirit are condensed from here - What is the HS and BU recognition of biblical revealed wisdom.
God has to counteract the negative, hateful, selfish, prideful spirit of the devil - not a sperate 'person' to the devil, but the way of evil which is not of God - for He alone is holy and those that are His are also made holy.