Nice story... but why do you think God wanted this Trinity to be mysterious as we are thinking it now to be?
i dont think god wants us to think about the mystery of the trinity. the 2 persona were not in question, being the god the father and son unless you qustion the divinity of the two. the 3rd is the spirit sent by god to guide the apostles into "all the truths". the next thing is, if you believe and interpret the bible verses that mention the holy spirit as the gift and guide of the faithful, believing that what has god sent us is his spirit in the name of his son.....
some biblical verses that myt be of interest to you..
John 14:26
But the Helper, the Holy Spirit, whom the Father will send in my name, he will teach you all things and bring to your remembrance all that I have said to you.
John 14:15-17
“If you love me, you will keep my commandments. And I will ask the Father, and he will give you another Helper, to be with you forever, even the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him. You know him, for he dwells with you and will be in you.
Acts 19:1-6
And it happened that while Apollos was at Corinth, Paul passed through the inland country and came to Ephesus. There he found some disciples. And he said to them, “Did you receive the Holy Spirit when you believed?” And they said, “No, we have not even heard that there is a Holy Spirit.” And he said, “Into what then were you baptized?” They said, “Into John's baptism.” And Paul said, “John baptized with the baptism of repentance, telling the people to believe in the one who was to come after him, that is, Jesus.” On hearing this, they were baptized in the name of the Lord Jesus.
Luke 1:35
And the angel answered her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the child to be born will be called holy—the Son of God.