Refuting Christian Evidence for the Divinity of the Holy Spirit
I suppose that what I have mentioned about the meaning of the Holy Spirit in the Holy Bible is enough to disprove this strange belief. Moreover, the meaning of the words “the Holy Spirit”, which Christians believe, does not exist in the Holy Bible. If we attentively study the passages, which mention the Holy Spirit, we willbe certain about the strangeness of this belief.
The Holy Spirit incarnated itself into different images - one as a pigeon, which descended on Jesus (PBUH) while he was praying,“and the Holy Spirit descended on him in bodily form, like a dove”(Luke 3/22). Was that pigeon Allah (S.W)?
At another time, it came as fiery tongues, when it overshadowed the disciples on the fiftieth day. “And suddenly there came from heaven a sound like a mighty rushing wind, and it filled the entire house where they were sitting. And divided tongues as of fire appeared to them and rested on each one of them.And they were all filled with the Holy Spirit.”(Acts 2/2-4)
Why do Christians not accept that the Holy Spirit could be Gabriel (PBUH) or Allah’s (S.W) angel as mentioned in their Holy Book? The Holy Spirit came to Cornelius and Peter, and he was one of Allah’s (S.W) angels“the Spirit said to him, "Behold, three men are looking for you.Rise and go down and accompany them without hesitation, for I have sent them.And Peter went down to the men….And they said, Cornelius…. Was directed by a holy angel to send for you to come to his house and to hear what you have to say.”(Acts 10/20-22) The Holy angel was the Spirit that spoke to Peter and it was he, who asked Cornelius to send his men to Peter.
The enemy of the Israelites from among the angels is Gabriel (PBUH). He is the Holy Spirit who saved them many times, then when they insisted on disbelieving, he became angry with them, tutored them, and became their enemy.“And the angel of his presence saved them; in his love and in his pity he redeemed them; he lifted them up and carried them all the days of old. But they rebelled and grieved his Holy Spirit; therefore he turned to be their enemy, and himself fought against them.”(Isaiah 63/9-10) They upset Allah’s (S.W) Holy Spirit, the angel, thus, turning his love to enmity.
The Holy Spirit was with the people of Israel when they left Egypt. “Then he remembered the days of old, of Moses and his people. Where is he who brought them up out of the sea with the shepherds of his flock? Where is he who put in the midst of them his Holy Spirit,Whodivided the waters before them to make for himself an everlasting name.”(Isaiah 63/11), but he was an angel not a divine person. "Behold, I send an angel before you to guard you on the way and to bring you to the place that I have prepared.”(Exodus 23/20) The Holy Spirit is the angel that was with them.
Allah’s (S.W) Spirit is not a name for Gabriel, but it is the name for many other angels as well. “And between the throne and the four living creatures and among the elders I saw a Lamb standing, as though it had been slain, with seven horns and with seven eyes, which are the seven spirits of God sent out into all the earth.”(Revelation 5/6). The Spirits that John saw were not gods; otherwise the Christian Trinity would not be a threesome, but a ten-some.
Revelation mentions these seven Spirits of Allah (S.W) in two other places: “From the throne came flashes of lightning, and rumblings and peals of thunder, and before the throne were burning seven torches of fire, which are the seven spirits of God.”(Revelation 4/5), "And to the angel of the church in Sardis write: 'The words of him who has the seven spirits of God and the seven stars.”(Revelation 3/1).
Whoever the Holy Spirit is, he is not Allah (S.W). If he is God, he should do everything by himself, but he cannot. Peter said, “But men spoke from God as they were carried along by the Holy Spirit.”(Peter (2) 1/21). If the Holy Spirit were an everlasting God and equal to the Father in every thing, he would make people speak his own words.
What disproves the divinity of the Holy Spirit is his ignorance – just like others - of the time of the Day of Judgment, as no one knows it except the Father. "But concerning that day or that hour, no one knows, not even the angels in heaven, nor the Son, but only the Father.”(Mark 13/32)
Another fact disproving the Holy Spirit’s divinity is that the passages speak of him as a gift from Allah (S.W) to men, as Jesus said, “If you then, who are evil, know how to give good gifts to your children, how much more will the heavenly Father give the Holy Spirit to those who ask him!”(Luke 11/13). It does not make sense that Allah (S.W), as the third divine being, is a gift that is given to and owned by people.
Moreover, if the Holy Spirit is God, we should consider the people who he descended on, as God. He descended on many people, like David,“And I will dwell among the children of Israel and will not forsake my people Israel.”(Kings (1) 6/13); Simon, “Now there was a man in Jerusalem, whose name was Simeon, and this man was righteous and devout, waiting for the consolation of Israel, and the Holy Spirit was upon him.”(Luke 2/25); the disciples, “But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses.”(Acts 1/8). Finally, he descended on the people of Corinth, who believed in Paul. Paul said, “Do you not know that your body is a temple of the Holy Spirit within you?”(Corinthians (1) 6/19). All these are worth worshipping if God – the Holy Spirit - is in them and fills them.
Not only does the Holy Bible consider those who believe in the Holy Spirit as believers, but it also considers the same for people who do not hear of the Holy Spirit. In addition, it considers them as disciples even though they do not know this claimed God. “And it happened that while Apollos was at Corinth, Paul passed through the inland country and came to Ephesus. There he found some disciples. And he said to them, "Did you receive the Holy Spirit when you believed?" And they said, "No, we have not even heard that there is a Holy Spirit.”(Acts 19/1-2) This, without doubt, disproves the divinity of the Holy Spirit.
What Christians refer to, regarding the divinity of the Holy Spirit in “God is spirit”(John 4/24), is wrong. The passage does not tell about the nature of Allah (S.W), but about one of His characteristics, as in “God is love”(John (1) 4/16), “God is light”(John (1) 1/5)
John meant that no one could see God almighty, because He is not a material body of flesh and blood, and Luke affirmed this as he said, “For a spirit does not have flesh and bones.”(Luke 24/39)
supported this meaning. Answering the question: 'why do people say that God is a Spirit?', they answer, “It is said that he is a Spirit because he is far above materiality and cannot be decayed.” 
Therefore, scholars believe that the Holy Spirit is not God, and the concept of the Trinity is a fabricated creed; made by the church councils according to the popes’ and the emperors’ wishes, without referring to any evidence proving this belief. A belief of which the prophets had never heard, was never mentioned by Jesus, and was unknown to the disciples.
The Modern Catholic encyclopedia was right in saying that “making one God into three persons was not established in Christian life or in their belief before the end of the fourth century.”
- Explanation of the Basic of Belief, Dr. Priest Andrew Watson and Dr. Priest Ibraheem Saeed, pp 28
- Forgiveness Between Islam and Christianity, Ibraheem Khaleel Ahmad, pp 95