It is said that there are three sources of evil, "the world, the flesh, and the Devil"; but the world and the flesh would be innocent were it not for the Devil.
Pilate's skeptical sneer "What is truth?" was addressed to Truth Himself, standing there right in front of his face. The world's stupidest question was three words; God's profoundest answer was one Word.
If God is not a Trinity, God is not love. For love requires three things: a lover, a beloved, and a relationship between them.