Defining; Understanding; Explaining.  Making sense of it all. Has never been easy.  Only God can save and both Jesus Christ and the Spirit are essential to salvation.  Therefore God, Jesus Christ, and the Spirit are divine. The Trinity will always be a mystery that transcends human comprehension.  It’s  not a contradiction that can be solved. Because no human analogy will ever be entirely accurate,

But where do you start?  How do you start?  Well there are some images and metaphors that have been used to help people understand and make sense of the Holy Trinity, the triune nature of God? St Patrick used the Shamrock (single plant with three leaves);  For St Augustine it was “intellect-will-memory”. An image drawn from psychology of the human person. St Augustine believed that the structure of the individual human soul was a mirror image of the Trinity. By knowing oneself, one would know God. 

The Catechism teaches that The Father, the Son, and the Spirit is one and the same God in their nature. The Father,’ ‘Son,’ and ‘Holy Spirit,’ the divine persons are really distinct from one another. ‘Father,’ ‘Son,’ and ‘Holy Spirit,’ are not names designating modalities of the divine being [Godhead]. They are distinct from one another. Their distinction lies in the relationship of each to the others

‘Lover-beloved-love’.  Christianity is the only religion where God is revealed to “be” love.  Because in order for there to be love, there must be a beloved. From all eternity, the Father, Son, and Holy Spirit have poured themselves out into each other in an infinite act of love, which we, as Christians, are called to experience through faith and the sacraments by which we are lifted up into that very love of God itself (Romans 5:1-5).  

It is the love of God that binds us, heals us, and makes us children of God (1 John 4:7; Matt. 5:44-45). “God so loved the world, that he gave his only begotten Son” (Jn 3:16)