From Dr. Wilson Benton Jr. in Be Still, My Soul (25 Classic and Contemporary Readings on the Problem of Pain):

You are one person living at one place, at one point in time and even if God chose to explain to you how all of the pieces of his giant puzzle are fitting together in a manner consistent with his own righteous and holy and gracious nature, so that he may faithfully fulfill his promise in your life and work everything that happens to you for your good, you couldn’t understand it. But you can believe that God understands it. And you can believe that God is loving enough, and powerful enough, and wise enough, and gracious enough, and faithful enough to you to do what he says when he promises to work everything for your good.