The Trinity is a fundamental doctrine for Christianity but Christianity is a story of salvation before it is a set of doctrines. The Trinity is no exception. If we get the story right, we might get the doctrine right, but if we get the story wrong, then we get the doctrine wrong for sure.
John 3 tells of Nicodemus coming to see Jesus at night, suggesting he is in the dark. Jesus’ words to Nicodemus: “Very truly, I tell you, no one can see the kingdom of God without being born from above,” (Jn. 3:3) don’t seem to follow from what Nicodemus has just said. It sounds like the answer to a question that was not asked. Is there an implied question to what Nicodemus did say? The only implied question I can pick up is: “How do I do the signs that you do?” If so, Jesus is saying that Nicodemus is asking the wrong question. Jesus says first that Nicodemus must be born again, or born from above, most likely both. Jesus “clarifies” the matter by saying that Nicodemus must be “born of the Spirit,” which is a problem since, like the wind, nobody knows “where it comes from or where it goes..” (Jn. 3: 8) Here, one Person of the Trinity enters into this story.
So far, Nicodemus is showing difficulty in knowing what he really wants, further indicating that he is in the dark. We are tempted to laugh at him for his obtuseness, but we would do well to ask ourselves if we really know what we want? So asking ourselves inserts us into the story where all of us are in the same pickle as Nicodemus, which is to say, we are all in the dark. René Girard is helpful here when he suggests that all of us don’t know what we want and so we all look to other people to show us what we want. That is, if we see (rightly or wrongly) other people wanting something, we tend to want it too. Girard also gives us the insight that since none of us knows what we really want, we end up in a social muddle that is fraught with conflict. In Romans, Paul tells us that “all who are led by the Spirit of God are children of God.” (Rom. 8: 14) So, even though we don’t know what we want we can be born anew, from above, into the Kingdom if we let this Spirit, whom we can’t understand or grasp, lead us.
Then, in another non sequitur, Jesus tells us a mini-story: “No one has ascended into heaven except the one who descended from heaven, the Son of Man.” (Jn. 3: 13) While Nicodemus and the rest of us have been thinking of rising above our humanity, Jesus has come down to take on our humanity and only then did he rise back up to heaven. So, trying to do the signs that Jesus did by some human technique is bound to fail and will keep us in the dark. But Jesus then retells a mysterious story in Numbers as a variant of the first story. During a medical and social crisis of plague in the wilderness, the sort of crisis Girard warns us will happen when we don’t know what we want, Moses was instructed to raise a bronze serpent so that any who look upon it are healed. Jesus is now claiming that he is the “bronze serpent” raised up on the cross. Raising Jesus on the cross is the result of our muddle over not knowing what we want and falling into violence as did the Jews in the desert. Yet looking at Jesus on the cross to the point of really seeing what we have done offers us a cure of our violence. Not only that, but so looking at Jesus will give us eternal life. In John, this phrase does not refer primarily to life after death but to the quality of life here and now (and presumably after death as well.) Being cured of our violence certainly is a way to an improved quality of life. This is the way of being born again, from above, of being children of God. Once born from above, our desires become much clearer and they are focused on the well-being of other people. More important, after coming down from heaven, Jesus did not return there until after he was raised up on the cross. What is above and what is below has gotten thoroughly turned around. We now have two members of the Trinity in our story.
Then Jesus briefly tells the same story in a different way: “For God so loved the world that he gave his only Son, so that everyone who believes in him may not perish but may have eternal life.” (Jn. 3: 16) Jesus was not sent to condemn the world, although there was much to condemn, but Jesus was sent so that the world might be saved through him. Paul says that the Holy Spirit cries out within us: “Abba! Father!” This exclamation makes us joint heirs with Christ if we allow our desires to be formed by the Desire that flows through all three persons of the Trinity.
When presented as just a doctrine, the Trinity looks like an mutual admiration society of three. When presented as a story, the Trinity is a union of three persons dedicated to creating and re-creating humanity and all creation.