It's a trinity thing. There's God the Father (Jehovah, or Yaweh, or I AM, depending), God the Son (Jesus), and God the Holy Spirit (who doesn't seem to have a name, as far as I can tell). These three entities are not separate, but different aspects of the Creator.
It's kind of like the three fates, or the Maiden/Matron/Crone triple goddess of other traditions.
Or was this meant to be a rhetorical question?
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