Here is the EXACT, VERBATIM, word-for-word doctrine of the Trinity. You might want to very carefully read this. Nearly all Christian denominations embrace this:
Note that the Father IS God. The Son IS God. The Holy Spirit IS God. But there are not 3 Gods. The "three-parts" idea that you perhaps are presenting is actually an early heresy that is condemned by the Doctrine of the Trinity above. Note that the Bible calls the Father specifically "GOD" (1 Peter 1:3, etc., etc.) - referring only to the Father. The Bible also calls the Son specifically "GOD" (not "Part God, partly God") (John 20:28, etc., etc.) - referring only to the Son. The Bible also specially calls the Spirit "GOD" (Acts 5:3-4, etc., etc., etc.) - referring only to the Spirit. Since each person IS God, the Bible is not wrong to call each specifically "GOD."
I think where 'confusion' comes is that we embrace that while the Father IS God and the Son IS God and the Spirit IS God, nonetheless God is TRIUNE (THREE yet one). Now, what the Bible NEVER does is call the Father "Trinity." Or the Son "Trinity". Or the Spirit "Trinity" That of course would be a violation of the doctrine as quoted above. The Father does NOT equal the Trinity, although He IS God and IS specifically and correctly reffered to as "GOD" in the Bible (many times!) - so the Bible is not wrong to call the Father "GOD" (but it would be wrong to refer ONLY to the First Person as "Trinity"); it is not wrong for the Bible to refer to the Son (and specifically to Jesus) as "GOD" (which it does many times) but it would be wrong to refer to Jesus as "Trinity." Again, carefully READ the verbatim, exact words of the doctrine of the Trinity which virtually every Christian denomination on the planet accepts, verbatim (of course, not the LDS or Oneness Pentecostalism, etc).
I think some that protest this ancient title (that is a declaration of an ECUMENICAL COUNCIL virtually ALL donominations ACCEPT and EMBRACE!) is that they simply CHANGE it. The ancient title embraced by the Ecumenical Council all of us accept is NOT "Mary - Mother of the Trinity." THAT would be wrong! But no one says that, no one has EVER used that title, no one has EVER claimed that. The title affirms two (and only) two things: Mary bore Jesus (Luke 2:1-7) and Jesus may be called "GOD (as Scripture itself does, for example, John 20:28). To deny the title is to deny one or both things it (AND THE BIBLE and the DOCTRINE OF THE TRINITY!) proclaim: Mary bore Jesus and Jesus may correctly be called "God." The confusion comes in part from people who don't know the doctrine of the Trinity and don't know that the Bible itself often calls an individual person of the Trinity as "GOD." Indeed Jesus HIMSELF (as the God/Man, 100% God and 100% man, inseparately) is also specifically called "GOD" by the Bible (and thus IMO it can't be wrong to do that.... and it certainly is not a violation of the Doctrine of the Trinity as the above shows).
I hope that helps!
- Josiah
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