2Cor. 13:14 ¶ iThe grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with you all.
The greatest of all mysteries is hidden away in God Himself. It is a mystery that we can only partially glimpse and that by divine revelation. The concept of one God revealed in three persons is impossible for the unregenerate mind to understand. First, we have the Father of love. His very nature is love. His nature is also eternal. If He has always loved from eternity then He has to have an object of His affection. Who could that be? Of course it is the second person of the blessed Trinity, the Lord Jesus Christ. Their love for one another is at the heart of the eternal mystery of God. Here is how C.S. Lewis saw it.
“…in Christianity God is not a static thing … but a dynamic, pulsating activity, a life, almost a kind of drama. Almost, if you will not think me irreverent, a kind of dance. The union between the Father and the Son is such a live concrete thing that this union itself is also a Person. I know this is almost inconceivable, but look at it thus. You know that among human beings, when they get together in a family, or a club, or a trade union, people talk about the ‘spirit’ of that family, or club, or trade union. They talk about its ‘spirit’ because the individual members, when they are together, do really develop particular ways of talking and behaving which they would not have if they were apart.* It is as if a sort of communal personality came into existence. Of course, it is not a real person: it is only rather like a person. But that is just one of the differences between God and us. What grows out of the joint life of the Father and Son is a real Person, is in fact the Third of the three Persons who are God.”
There you have it, the third person of the Trinity is also God. He is actually the love of the Father and the love of the Son so powerful and full of life that this love is actually a person, not a power or a feeling. The Holy Spirit is God. I think heaven is going to be quite an amazing place. It will be the unfolding, unveiling of the eternal nature of the Father, Son, and Holy Spirit. As Jonathan Edwards said, “Heaven is a world of love” .