Quite agree with the above, Paul!the Trinity doctrine is a tough one to understand and, to be honest, very few people DO understand it
I was in a small group with a pastor of a church I once attended - good church, classical Biblical doctrine - and he said, "If anyone tells you they truly understand the Trinity, they're lying!" He understood and agreed with its Biblical basis, but not so much from his mortal, human standpoint. And as God has forever fellowshiped within His Trinity of love, and as He has NO actual needs that aren't met within It, sometimes it makes one wonder why He made us, ESPESCIALLY knowing what the cost of that would, one day, be.