The Bible describes the Spirit of God in many different ways or speaks of God as if He is composed of many separate “Spirits”. The following are just a few examples.
Revelation 5:6 “And I looked, and behold, in the midst of the throne and of the four living creature, and in the midst of the elders, stood a Lamb as though it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent out into all the earth.”
John 16:13 “However, when He, the Spirit of truth has come, He will guide you in all truth.”
Ephesians 1:17 “that the God of our Lord Jesus Christ, the Father of glory, may give to you the spirit of wisdom and revelation in the knowledge of Him.”
Hebrews 10:29 " Of how much worse punishment, do you suppose, will he be thought worthy who has trampled the Son of God underfoot, counted the blood of the covenant by which he was sanctified a common thing , and insulted the Spirit of grace?"
Isaiah 11:2 “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.”
Zechariah 12:10 “And I will pour on the house of David and on the inhabitants of Jerusalem the Spirit of grace and supplication.”
Proverbs 8:22 “The Lord possessed me (wisdom) at the beginning of His way.”
The problem I have with the Trinitarian theory is that many who believe in it will say, that if you don’t believe that God is three separate “Persons” or Spirits in one, then you are denying God. To me, this is the same as saying that if you don’t believe that wisdom, truth, grace, etc., are all separate “Persons” or “Spirits” of God, each with their own identities, then you are also denying God.