GOD is Spirit-John 4:v.24.
There is only one Spirit, the Word, the Word is GOD, one Body, and one Spirit, one Lord, one faith, one baptism, one God and Father of all, who is above all, and through all, and in you all. Ephesians 4:v.4-6
There is one GOD and Father of all, who is above all, and through all, and in you all-Eph.4:v.6. Who is Him according Scriptures? He is the Word. Great mystery; the Word is GOD, the invisible GOD.
The Word, I mean GOD, is an invisible Person. GOD is a title, it is the title of the Supreme Being, even Him who is Omnipotent, and Omniscient, and Omnipresent, as above said, He is One GOD and Father of all, who is above all, and through all, and in you all. And when was made flesh He chose a name for He Himself, JESUS.
That said, do I need to talk about JESUS? What was exposed above clearly reflects who JESUS is, doesn't it? Reading Hebrews 1:v.1-3 heaven opens more clearly and widely to know and see JESUS just as He is. Just as JESUS said: I and my Father are Um-John 10:v.30. And he that hath seen me hath seen the Father-John 14:v.9.
But the great mystery is the third person intrinsically linked to the Word, say GOD the Father; the unknown personage called Holy Spirit (for me it is in no case admissible to speak of him as "ghost", it is a device trying to comment of an unknown personage within celestial environment).
The person of the Holy Spirit (no ghost) is present with the invisible GOD since the beginning, from Genesis to Revelation, sometimes in ocult, some times as an angel(archangel), as Liberator or Protector, even as a Warrior.
Since the beginning he is with GOD the Father, hidden or in occult with JESUS in Genesis 1:v.26;
He was with Noah in the Ark: Genesis 8:v.10-11
He blessed Abram, and Abram gave him tithes of all: Genesis 14:v.18-20.
He was one of the three that visited Abram in the plains of Mamre:Genesis 18:v.2
He ate bake, and unleavened bread, in the house of Lot, and also destroyed Sodom, and Gomorrah, and neighboring cities: Genesis 19:v.3 and 12-13.
The Lord -the person of the Holy Spirit- a MAN, a MAN of war, the Lord is his name-Exodus 15:v.3. JESUS is the LORD of lords, the Savior;
And the angel of God (the Lord, a prince of GOD, a warrior; which went before the camp of Israel, he removed and went behind them; and the pillar of the cloud went from before their face, and stood behind them:Exodus 14:v.19
The same angel (in fact an archangel) appeared to Moses in the Mount Sinai, and called Moses for the work to which GOD made him be born-Exodus 3:v. 10
GOD sent him in His own name to guide Moses during the journey of the people of Israel in the desert, he stood before Moses to fight and destroy six idolaters peoples in the way of Israel. Exodus 23:v.20-25, and even sickness would be taken away from the midst of the people.
Later he is with Joshua as a prince of the host of the Lord with his Sword drawn in his hand-Joshua 5:v.13 to 15.
Jumping to Revelation, we see him being sent by JESUS to the isle of Patmos to explain to John the content of the sealed book, the book of Apocalypse - Revelation 1:v.1. JESUS said: I Jesus have sent mine angel to testify unto you these things in the churches. I am the root and the offspring of David, and the bright and morning star. Revelation 22:v.16
To call, or to suggest, or changing the title of the Holy Spirit as Holy "Ghost" because the mysterious person of Holy Spirit is unknown, it was a nonsense of the translators; "Ghost" is like a nickname, a fantasy, a mockery, because within Scriptures the Holy Spirit is the Paraclete, a defender, mentor, helper, intercessor, guide and protect another person, a comforter, he has a name written (in the Word of GOD, course), that no man knew/know, but he himself.
There are three that bear record in heaven (heaven? Ephesians1:v.3, among others), the Father-GOD the Father-, the Word-the Word made flesh-JESUS-, and the Holy "Ghost" -as he was nicknamed: (but he is not a "ghost" , but a person in flesh and bones as JESUS also was and is) and these three are One.
Speaking of heaven, "the heavens (the FIRST TWO HEAVENS) and the earth (ISRAEL, THE DRY LAND, THE CLAY, and not the Planet Earth) which are now, by the same Word (God's Word) are kept in store, reserved unto FIRE against this Day of Judgment (the Lord's Day, the seventh and last Day, or seventh and last millennium) and perdition of ungodly men-2Peter 3:v.7 combined with Isaiah 33:v.10 to 14, among others.
To the only wise God our Saviour, be Glory and Majesty, Dominion and Power, both now and ever. Amen. Jude 1:v.25