I make no apologies for returning to this subject, but it seems from what I read in social media and on Christian TV that many do not understand what, or Who, is the Holy Spirit.
Just before Jesus was raised to Heaven, after His Resurrection, He promised His disciples that He will send them the Holy Spirit to help and guide them. They probably did not understand what He meant; but a few days later, at Pentecost, they experienced the Holy Spirit descending on them.
The Holy Spirit is a living spiritual Being. He is not an "it"; but "He". God is a living Spirit. Jesus is a living Spirit and has always existed. He became visible in human form on earth when He was born of a virgin. But He always existed as a Spirit. The Holy Spirit has always existed too.
Don't try to work it out. It is not a puzzle and there's no prize for the right answer. It is a mystery of the Christian faith and we are asked, (invited), to believe it without explanation. Not in this life at least.
The Holy Spirit, let's call Him the very soul of God as an explanation, descended on the disciples and transformed them by giving them Christ's peace in their hearts, the courage to speak up and proclaim the truth they had witnessed about Jesus, and the knowledge of what to say and do and when to do it.
Today, the Holy Spirit can descend on an individual and guide and help them through life; heal them also. All you have to do is ask earnestly and honestly for God to send the Holy Spirit upon you.
I have seen it happen. I have known people with the Holy Spirit. They are usually very calm, serene and peaceful. Nothing seems to stir them and they are confident that God is in control of their lives and of everything.
Would you not wish to be always calm, and at peace with yourself and the world, totally sure that God is by your side and whatever happens all will be well with you and yours?
These days the message of Pentecost has been confused or deliberately obfuscated through time. I guess it is partly because the world has become more secular and unbelieving.
I say more about the Holy Spirit in my latest book, "Searching for God".