Friends, in today’s Gospel, Jesus identifies himself with the Father and so hints at the reality of the Trinity.
The Trinity is just another way of saying that God is love. But this has to imply that there is a play, within the unity of God, of lover, beloved, and shared love. This is precisely what we mean when we speak of the Father, the Son, and the Holy Spirit.
This love is so white-hot, so intense, that it spills over into creation. In the case of human beings, this communication in love was interrupted by sin. What did the triune God do in order to address this problem? In another place John famously says, “God so loved the world that he gave his only-begotten Son, so that everyone who believes in him might not perish but might have eternal life.”
The Father so burned with the love of the Holy Spirit that he sent his own Son into the world so that a sinful humanity might be drawn back into community. The Trinity opened up so as to include a sinful and wandering humanity. The Trinity is far from an abstract doctrine. It names the very dynamics of salvation.