Jehovah Witnesses may argue that the Holy Spirit is not God, but rather God’s active force. In the Greek, the word “Spirit” is to pnuema to hagion, which is neuter form. So, the Spirit is a thing, not a person. There is no such thing as a Trinity to the Jehovah’s Witnesses, because they do not believe that there are three persons in the Godhead, but just one, who is God the Father. This is the only person whom the Jehovah Witnesses recognize as the Jehovah God, no other. But if they really read the Bible (even their New World Translation), they would have seen that the Holy Ghost is indeed God, not some active force. One of their verses even plainly stated, "Jehovah is the Spirit."
1) Although it is true that the word “Spirit” is in neuter form, it does not mean that the Spirit is neuter. For example, the word Greek word for “heart” is kardia, which is feminine. Does this mean a heart is a female? The Greek word for “child” is teknon, which is neuter. Does this mean a child is a thing? So, words are simply assigned with genders in the Greek language. It does not mean that they are males, females, or things.
2) John 4:24 (NWT) reveals that “God is a Spirit.” So, the Spirit is God, not His active force. Otherwise, you will have to admit that God is a thing.
3) Hebrews 3:7-12 (NWT) reveals Paul warning to not draw away from God by explaining about the children of Israel drawing away from the Holy Spirit. So, the Holy Spirit is God. Hebrews 3:7-12, which is the Holy Spirit speaking, is a direct cross-reference to Psalms 95:7-11, which is Jehovah speaking.
4) 2 Corinthians 3:17-18 (NWT) plainly reads, “Jehovah is the Spirit,” and calls Him “Jehovah the Spirit.” So, Jehovah is the Spirit; the Spirit is not just an active force.
5) Acts 5:3-4 (NWT) reveals that when Ananias was playing false to the Holy Ghost, he was playing false to God.
6) Acts 21:11 (NWT) and Acts 22:18-19 (NWT) show that the Holy Spirit warned Paul to not go to Jerusalem, and Paul calls him, “Lord.”