Trinitarian Ontology... What is it? Being vs person vs essence vs _______

I will try to ask this unique question again. How can we answer here without defining simple words used to define God? **Premise** From Wikipedia: >***Ontology*** addresses questions of how entities are grouped into categories and which of these entities exist on the most fundamental level. Ontologists often try to determine what the categories or highest kinds are and how they form a system of categories that encompasses classification of all entities. **person** pûr′sən noun >An individual of specified character. The composite of characteristics that make up an individual personality; the self. **personhood** pûr′sən-hoo͝d″ noun >The state or condition of being a person, especially having those qualities that confer distinct individuality. Grammerly.com >A **personal pronoun** is a short word we use as a simple substitute for the proper name of a **person**. The 1 God, YHWH, uses the **singular** masculine **personal pronoun** to describe **Himself**. So do the 3 **persons** of the trinity. The 1 true God, is described as having a ***personality***. Zephaniah 3:17 >YHWH your God in your midst, **The Mighty One**, will save; He will rejoice over you with gladness, He will quiet you with His love, He will rejoice over you with singing.” Isaiah 42:8 >"I am YHWH, ***that is My name***; And My glory I will not give to another, Nor My praise to carved images." *Note here: YHWH doesn't share His unique glory. His uniquely supreme nature is only His.* John 17:3 (*Jesus speaking directly to God Almighty*) >And this is life eternal, that they might know thee the **only true God**, and Jesus Christ, whom thou hast sent. **QUESTION** -- ***According to the triune concept, there exist 3 eternal persons. How can 3 eternal persons with 3 distinct presences, be the 1 God of Israel?*** >“Hear, O Israel: YHWH our God, **YHWH is one**” (Deuteronomy 6:4). **God is one **what**? What is of one in the Trinity doctrine?** Please solve this equation: >***1person+1person+1person=1_____*** - a.) 1 person - b.) 1 being - c.) 1 essence - d.) 1 [other defined noun] Please define these words so that we can better understand. - If YHWH is **1 singular person**, how can 3 persons be 1 person and how many personalities? - If YHWH is **1 being**, how is a being different than a person? And how many personalities does this being have? - If YHWH is **1 non personified essence/nature**, please address how He addresses Himself with singular personal pronouns and His personality? __________________________________________________ Before flagging this question please read: **Stated rules for duplicates defined from this SE's META:** *"1.Having one 'perfect' form of a question that contains every possible answer to every slight variation of that question is a myth at best and actively harmful at worst.* *"2.Having dozens and dozens of variations of the same question is clearly bad.* *"3.What we want is on the order of 4 or 5 similar-but-not-quite-the-same duplicates to cover all possible search terms and common permutations of the question. It is also OK for these duplicates to have their own answers so people who find them don’t have to click yet again to get to a good answer."*