Trinitarians?

Let me get this straight... God sent himself down to earth telling everyone that he was his son. He then sent down a blessing to himself when he was baptised (he was baptised to show his father that he was choosing his path, free of sin). Then when he was to die, he prayed to himself in the garden of Gethsemane and asked for a release of his burden but said "nevertheless, it's your bidding that matters, not my own wishes." [And he said, Abba, Father, all things are possible unto thee; take away this cup from me: nevertheless not what I will, but what thou wilt.] God then died and resurrected himself after three days. And if Jesus is God, how did Satan manage to tempt him? I really cannot see how the father, the son and the holy ghost are all one thing. Maybe those scrips about the "word" are typos?