Mind if I play here in your sandbox briefly?
The doctrine of the Trinity is a meaty subject, for sure, with plenty in it to chew on. For the record, I am not interested in persuading you to accept it, i.e. place your confidence in it. I am merely offering my understanding of it which I have received from others. Take it; leave it; or do what you will with or about it.
I've gone through this thread, albeit quickly, and readily understand and sympathize with your comments:
However, ... allow me to offer the following:
I. The Trinity consists of three Divine Persons. the Father, the Son, and the Holy Spirit (also called, by some, the Holy Ghost.
- The Father is not the Son;
- The Father is not the Holy Spirit;
- The Son is not the Father;
- The Son is not the Holy Spirit;
- The Holy Spirit is not the Father; and
- The Holy Spirit is not the Son.
If I said no more, you'd rightly be inclined to believe that the Trinity is a polytheistic doctrine. However, ... I say more.
2. Each Divine Person is God. [Note that I did NOT say that each is a god.
- The Father is God.
- The Son is God.
- The Holy Spirit is God.
I have heard the matter put this way: There is one "what" and there are three "Who"s. I'm not particularly excited by that statement, but I mention it because it was given to me by the same who gave me #1 and #2.
The most common depiction of the Trinity that I have seen is this one:
View attachment 28196
3. The Doctrine of the Trinity contains three "legs", i.e. equally important fundamentals or core beliefs:
- Monotheism: There is only one God;
- There are three Divine Persons; and
- The three Divine Persons are coequal and coeternal.
The importance of all three fundamentals may be seen in the following graphic:
View attachment 28200
In the graphic above, the three fundamentals are highlighted in orange.
- Denial of monotheism leaves an arrow pointed at "Polytheism." A polytheistic Christian is commonly deemed a heretic by monotheistic Christians.
- I believe that I am correct if I say that members of the Latter-day Saints of Jesus Christ (a.k.a. Mormons) are polytheistic Christians.
- Denial of the three Divine Persons leaves an arrow pointed at "Modalism." Modalist monotheistic Christians, a.k.a. modalist monarchists, as I understand, say that that the Father, the Son, and the Holy Spirit are just three modes or aspects of the one God, e.g. "One-ness" Pentecostals and Sabellius and his followers (a third-century priest).
- Denial of the Coequality and Coeternality of the three Divine Persons leaves an arrow pointed at "Subordinationism." Subordinationist Christians believe that the Son and the Holy Spirit are divine but subordinate to the Father, e.g. this Arian heresy was condemned in the First Council of Constantinople (381 A.D.).
- Denial of both (a) the three Divine Persons and (b) their Coequality and Coeternity yields a very monotheistic Christianity, e.g. Jehovah's Witnesses.
- I'm inclined to believe that Jehovah's Witness monotheists are closer to Muslims (but certainly NOT the same as Muslims), and probably closer than faithful Jews.
I'll end this message here.