this really is simple when you start stopping to complicate this.
Here O Israel, the Lord our God is ONE LORD.
God has always been God. He will always be God and beside him there is no other. NONE.
God has revieled himself to humanity as Father in creation, Son in redemption and Holy Spirit regeneration.
He has chosen a name for himself. That name is Jesus.
There will come a day when he chooses a new name.
between now and then, he has left us with a simple easy to understand connection to him.....ergo.... LISTEN TO PETER> Mt. 16.
Peter:
Acts 2
The rest us man trying to intectualize their way into putting God in a box.