Whether person or power, the Holy Spirit is named separately from the Father and the Son. But it’s in relationship with the Father and Son that we discover who or what the Holy Spirit is – as we see in Acts 16:7, for instance, where the Holy Spirit is called the “Spirit of Jesus.”
That’s because Jesus’ entire life was intimately related to the Spirit. He was conceived by the Spirit, identified by the Spirit at his baptism, led by the Spirit into the wilderness, and in his first public address Jesus said, “The Spirit of the Lord is on me,” Luke 4:18. Jesus identified the Spirit as being in close, intimate relationship with him.
The Spirit is also called “the Spirit of your Father,” Matthew 10:20, so the Spirit is intimately related to the Father too. In John 14:26 the Father sends the Holy Spirit in Jesus’ name, so in trying to discover who or what the Holy Spirit is, Scripture clearly identifies the Spirit in intimate relationship with both Father and Son.
And just as Jesus never said or did anything on his own authority (John 12:49-50), the Spirit does “not speak on his own (authority)” either, John 16:13. What we see in Scripture, then, is the Father, Son and Spirit operating in total harmony together. It’s a wonderful window into who and what God is. God is a communion of love, an intimate relationship, as we see again in the relationship between the Holy Spirit and Jesus, because Jesus’ great goal in his life, death, resurrection and ascension was to have the Holy Spirit given to us (John 14:16, 16:13, Acts 1:8, 2:38). But it’s the Spirit’s great purpose to bring us into union with Christ (Ephesians 3:16-17, 1 John 4:13).
So we’ve got Christ’s great desire being to unite us to the Holy Spirit, and the Holy Spirit’s great desire to unite us to Christ. In the relationship between the Holy Spirit and Jesus, then, we have the same window into God, and again it’s all about God being an intimate relationship of love, which then extends to loving us too.
We don’t see God primarily as either persons or powers, therefore. Instead, we see God as a relationship always operating in total harmony. And the Holy Spirit is identified as being part of that relationship, operating in exactly the same way as the Father and Son do, in close, intimate relationship together. When thinking of the Holy Spirit, then, it’s in relationship with the Father and Son, operating in total harmony together on our behalf. That’s the focus in Scripture, not on whether the Holy Spirit is a separate person or a power.