Travel back in your mind for a moment to the beginning of time, before Creation, and imagine a God who is not a Trinity: a solitary, all-powerful, self-sufficient Supreme Being. He relates to no one, answers to no one, speaks to no one. He is independent and alone, living in secluded splendor.
His thoughts do not go beyond Himself, because He is all there is. He knows nothing of relationships, dialogue, intimacy, love, friendship, serving, or giving. He has no need to practice consideration, patience, respect, generosity, self-sacrifice, compassion, or kindness. He takes no one else into account, because no one else is there. His existence revolves entirely around Himself.
If such a God were to create a universe, would He make a world of people where it’s all about family, community, and relationships? Would He come up with the idea of something called marriage, where two lives merge and live together as one? Would He establish love as the supreme virtue?
It is highly improbable.
Would He give us the capacity for humor and enjoyment and laughter?
Would it ever occur to Him to become human and to share His glory with us?
It would never cross His mind.
If the Solitary Deity had created us it would be to obtain service and worship. It would be all about His supremacy and our subservience; He would be king and we would be servants. It is not people and relationships that would interest Him but compliance. This God would demand that we bow and obey—you get with the program or you’re in big trouble.
That’s the kind of universe we would expect from the all-powerful Unaccompanied Boss.
You end up with a heavenly Hitler.
But … what if this God were actually a Trinity: a community of love and goodness and creativity and joy? What if this Divine Being were made up of a Father and a Son who love each other with eternal passion in the abounding fellowship of the Spirit? His creative activity would be entirely different, would it not?
We would envisage such a God to make a world where people experience the joys of marriage and family and friendship, and where love is valued as supreme. A realm where there is joy and goodness and beauty and wonder. A planet of sunsets, strawberries, butterflies, waterfalls, roses, and hummingbirds.
Such a God would create people in His image in order to lavish upon them His love and goodness. And it would not be surprising that, if things went awry, He would respond in mercy and compassion, and, if necessary, act sacrificially to rescue His creation.
It is also conceivable that this Divine Community of love would go a step further and invite humans to be part of His family as sons and daughters.
A totally different scenario develops when we have a Father- Son-and-Spirit God, instead of a Celestial Caesar. The Trinity is more than just another item in the creed. It is bedrock truth about God that radically transforms the whole story.
The Solitary Deity ends up looking a whole lot like a Middle Eastern deity who rewards suicide bombers and terrorists with heaven.
The Triune God ends up looking like Jesus giving His life for His enemies on a cross.
This is the God Jesus made known to us—the stunningly beautiful God of overflowing love and joy, who is Father, Son, and Spirit.
–J. O. Schulz, What Jesus Wished People Knew About God