*
vatican.va/archive/ccc_css/archive/catechism/p1s2c1p2.htm
'The dogma of the Holy Trinity
253 The Trinity is One. We do not confess three Gods, but
one God in three persons, the "consubstantial Trinity"…
83
The divine persons do not share the one divinity among themselves but each of them is God whole and entire:
"The Father is that which the Son is, the Son that which the Father is, the Father and the Son that which the Holy Spirit is, i.e. by nature one God."84 In the words of the Fourth Lateran Council (1215),…
…
"Each of the persons is that supreme reality, viz., the divine substance, essence or nature."85’…
(‘Supreme reality’ not ‘fiction’.)
‘…254
The divine persons are really distinct from one another’…
(Again, that word ‘really’ i.e:- real, true etc…)
'
"God is one but not solitary…
‘"86 "
Father", “Son”, “Holy Spirit” are not simply names designating modalities of the divine being,…’
!
'…
.for they are really distinct from one another: "He is not the Father who is the Son, nor is the Son he who is the Father, nor is the Holy Spirit he who is the Father or the Son.
"87
They are distinct from one another in their relations of origin:
…
"It is the Father who generates, the Son who is begotten, and the Holy Spirit who proceeds.
"88 The divine Unity is Triune.
255 The divine persons are relative to one another. Because it does not divide the divine unity, the real distinction of the persons from one another resides solely in the relationships which relate them to one another: "In the relational names of the persons the Father is related to the Son, the Son to the Father, and the Holy Spirit to both. While they are called three persons in view of their relations, we believe in one nature or substance."89 Indeed "everything (in them) is one where there is no opposition of relationship."90 “Because of that unity the Father is wholly in the Son and wholly in the Holy Spirit; the Son is wholly in the Father and wholly in the Holy Spirit; the Holy Spirit is wholly in the Father and wholly in the Son.”*
I would also say that because the Persons share divinity they are one in relation but because they are Divine as a whole in the one substance in relation to one another, they are still each divine wholly as separate Persons in one. We are the body of, and in, the Second Person, and He is our Head - the ‘beatific vision’. He is the groom and we are the bride. The Father is still the Father.
So, although The Son is Begotten maybe the word ‘body’ as a summary is not allowing each Person their separate distinction as fully Divine in completely unified relation to one another; otherwise, it would be One Person is One Creator yet the truth is not this. And He is not three separate creators. He is fully divine in each of the three distinct Persons in One, each Person in perfect relationship to the other.