I will give you a couple of definition verses that make this very clear. The first is in II Corinthians 3:17, where Paul says, “The Lord is the Spirit….” Paul explicitly equates the Holy Spirit with Jesus Christ. Next, I John 2:1 says, “We have an Advocate with the Father, Jesus Christ the righteous.” The word translated “Advocate” is Parakletos—the Helper. It is as though the apostle John knew that Christ’s words could be difficult, so when John wrote that epistle, he spelled out that the Parakletos IS Jesus Himself. We could add to this the letters to the 7 churches: Each one is from Jesus Christ, and each concludes with, “He who has an ear, let him hear what the Spirit says to the churches.” So, when a verse mentions the Holy Spirit in a way that indicates a personality, we can apply these verses and see that it is referring to Christ, and generally the Father as well. The Father is in Christ, and Christ is in the Father, and they operate as One.
