It’s only important if we embrace the possibility of truth being embedded in the statement 'good always prevails'. The idea that good will prevail over the course of time is a philosophy handed down by generations of writers and thinkers, theological and secular.
If we accept the truth of that idea as an acknowledged principle, then it raises the question of whether or not it should alter the way we live our lives. If I accept that good prevails I might elect to care not a thread if I abet its ultimate triumph, another way of saying it doesn’t matter what I do in my life. I might also say it this way, “If good always triumphs in the end there is no need for intervention on my part.” Conversely, if I decide that the flow of good required for triumph is inherently tied to my personal actions, it creates the need of a demanding code of conduct, a code directly predicated on embracing one simple belief.
If I answer one way, the moral direction of the universe demands nothing of me. If I answer the other way, the moral direction demands everything of me.
Martin Luther King wrote the beautiful phrase “Let us realize the arc of the moral universe is long, but it bends toward justice.” It is a philosophical and poetic phrase. Is it true? If the moral universe bends toward justice do I have an obligation to help it bend? Do you?
In that same speech given on August 16, 1967, King quoted a William Cullen Bryant phrase of matching power, "Truth crushed to earth will rise again."
If good can be equated with justice or truth, then we might combine all of this thinking into the idea that good, justice and truth prevail over time, or as King poetically states, “over the arc of the moral universe”.
Do we have a part? Or is it out of our hands and lying in the larger hands of the Creator? Or, is it possible the hands of the Creator exist at the ends of our arms?