I think part of the problem describing the Trinity involves the use of the word** “person”**
We hear this person as…I am a person, you are a person and we are all persons…
However, the word person here is derived from the Greek ‘persona’ …and as such does not refer to an individual ‘person’
I am one person, however I am first someones daughter. The last of several children in my family I am also a sister. I was a grand-daughter to my parents parents…I am a wife, mother, grandmother, friend, employer, cousin…You see this individual person [me] has many ‘personas’ They are roles or relationships that I fulfill through out my life and the lies of those around me…
Part of the mystery of God is how wonderfully perfect and complete One God is in the Perfection of Three [Father, Son and Holy Spirit].
Some have wondered about how much like a family God is…but in reality God is the perfection of family and it is we mankind] who are ‘like’ a family.
However, we are imperfectly like the family [Trinity]…it atkes us many roles and yet we love imperfectly where Jesus loves us to perfection even sacrificing himself for us. We forgive but not with the ungrudging forgiveness of God who loves as our eternal Father.