The only thing I would have to disagree on, is this “(the holy sprit) existing as separate entities is not a Biblical concept” and here’s why I think that:

For starters God refers to himself as three different entities a lot in the New Testament and (at least) two different entities also in the Old Testament; in Tower of Babel story. Specifically when God says, “Come, let Us go down and there confuse their language, that they may not understand one another’s speech.” (Genesis 11:7) Also, in the story of when Jesus gets baptized (Matthew 3:13-17), I ask you, why did he get baptized? I assume it was to receive the Holy Sprit which later it says, “He saw the Spirit of God descending like a dove alighting upon Him.” Seeming to confirm He didn’t have it at first, meaning They were separate. Lastly, in the story when Jesus dies on the cross, right before Jesus dies He “cried out with a loud voice, saying, ‘Eli, Eli, lama sabachthani?’ that is, ‘My God, My God, why have you forsaken Me?’” I will also assume that God, whether it be the Holy Sprit or the Father, God left him. In that case, Jesus was undoubtedly separated from God.

Now I won’t ignore that places where God says He is One but after seeing, “Therefore a man shall leave his father and mother and be joined to his wife, and they shall become one flesh.” I start to get an idea of what God really means. Obviously, anyone married knows the husband and wife doesn’t physically merge together as one person forever, but I’ve thought of their one-ness as an inseparable-spiritual bond; “Therefore what God has joined together, let not man separate.” Just as God referrers to a man and woman as “one” so I have thought-the relationship between the Father, the Son, and the Holy Sprit-as One. And just like when marriage is separated my divorce, as when Jesus was forsaken by God, it creates a disheartening spiritual and emotional tear, yet they can physically be apart.

But what do you think?