Yet another way is Jesus, god and the holy spirit are simultaneously three separate "persons/individuals" but one "being" or one "power". So not entirely separate and not modal. Existing in all three forms simultaneously but as one.
All this shows that we need to have a metric for understanding truth other than someone's sole interpretation. The validity or “truth” of an interpretation depends on how close the interpretation is to what the other of the text meant, better know as the author’s intent. This venture of trying to understand this is called herminutics.
Also it is not one dude in many bodies. The only person of the Godhead that had a body was the Son/Jesus, and that is because he joined his nature/substance to our human substance. That is why Jesus is both God and Man. Also it is the only way salvation makes sense. Jesus as man lived a perfect life as a man thus redeeming us. Yet he wasn’t able to do it solely as a man and his divine nature is what allowed him to live a sinless life
Also what is valuable in understanding the right interpretation know what the interpretation of the text was at that time and through history. There have been a lot of movements called Christianity in the US over the past few centuries. Problem is they are not really Connected to what the church has believed through time. Yes there has been schisms and breaks through the 2000 year history, but what all Christian denominations and sects have believed through time is the Trinitarian understanding. This is a historically verifiable fact. I would encourage you to study more on this: church history and historical theology. I’ll post a link to something below with a whole series on this.
Also what I quoted from you is close to what what a Trinitarian view is, as articulated by the church through time. Articulating with precision is important as specific language was chosen for a reason. But the idea of three persons in one power is not the right understanding. God is not a power, he is a personal being with a will. If you are up for it, watch this guys series on the councils.
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