Trinitarians do not understand the nature of man and so do not understand the nature of our Creator who made us in His image.
Man is Spirit Soul And Body. He is a spirit being who has a soul which navigates the Physical Realm in a body.
Our Creator is a Spirit (the Holy Spirit) who has a Soul (the Mind Of Christ) and which navigated the Physical Realm in a Body which is called Jesus, who is now seated at the right hand of the Majesty.
Understand that `Father` is a function that a being performs. It is a title of honour but it is not the name of the person who begets.
So, who is our Heavenly Father?
First of all, `heaven` refers to the Spirit Realm. It is not so much a place as it is a dimension of existence. So, `Heavenly Father` can be rendered as `Spirit Father`.
Coupling the function of `Father` with Spirit we see that `Heavenly Father` simply means `Spirit begetter`.
Who is this Spirit?
→ The Holy Spirit is the Spirit of `God`.
→ The Holy Spirit is the Father.
→ The Holy Spirit is the Spirit of Christ Jesus.
To bring this full circle we conclude that the Holy Spirit is the eternal, omniscient, omnipresent, Creator, who is the `begetter` or Father of all life.
→ Jesus is the image of the Holy Spirit.
→ The Holy Spirit is the Spirit Of Christ Jesus.
→ Jesus is God (supreme deity) who is the manifestation of the Holy Spirit who cannot be seen.
But what about this verse: (read the note)