Spirit

Spirit of God/Lord is the Spirit in form of guidance (knowledge) & strength from God

Isaiah 11:2
The Spirit of the LORD will rest on Him, The spirit of wisdom and understanding, The spirit of counsel and strength, The spirit of knowledge and the fear of the LORD.

 "The Spirit of the LORD shall rest upon him, the Spirit of wisdom and understanding, the Spirit of counsel and might, the Spirit of knowledge and of the fear of the LORD, and He will delight in the fear of the Lord." Isaiah 11:2-3 (NASB).

Holy Ghost is angle Gabriel-birth of Jesus

Matthew 1:18
This is how the birth of Jesus Christ came about: His mother Mary was pledged in marriage to Joseph, but before they came together, she was found to be with Child through the Holy Spirit.

Luke 1:26-27
26- In the sixth month, God sent the angel Gabriel to a town in Galilee called Nazareth,
27- to a virgin pledged in marriage to a man named Joseph, who was of the house of David. And the virgin’s name was Mary.

God is the spirit for true freedom

2 Corinthians 3:17
Now the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom.

God is the spirit in the action of worship itself

John 4:24
•God is spirit, and •those who are worshiping Him |must be worshiping in spirit and truth."

Not every kind of Spirit can be trusted

1 John 4:1 New King James Version (NKJV)

 Beloved, do not believe every spirit, but test the spirits, whether they are of God; because many false prophets have gone out into the world.

The True Spirit (The Spirit of the Truth)
Anyone who confess jesus as Christ is the spirit from God

.1 John 4:2-3  New International Version (NIV)

 2- By thisyou will know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is from god,
3- and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you have heard is coming, and is already in the world at this time

[And mention] when the angels said, "O Mary, indeed Allah gives you good tidings of a word from Him, whose name will be the Messiah, Jesus, the son of Mary - distinguished in this world and the Hereafter and among those brought near [to Allah ].(Quran: 3:45)

1 John 4:2-3 New Living Translation (NLT)
This is how we know if they have the Spirit of God: If a person claiming to be a prophet[a] acknowledges that Jesus Christ came in a real body, that person has the Spirit of God.  But if someone claims to be a prophet and does not acknowledge the truth about Jesus, that person is not from God. Such a person has the spirit of the Antichrist, which you heard is coming into the world and indeed is already here.

1 John 4: 2-3 International Standard Version
2-This is how you can recognize God’s Spirit: Every spirit who acknowledges that Jesus the Messiah has become human—and remains so—is from God.
3-But every spirit who does not acknowledge Jesus is not from God. This is the spirit of the antichrist. You have heard that he is coming, and now he is already in the world.

Ahmad Deedat Explain who is the Holy Spirit

Ahmad Deedat : who is the Holy Spirit