Sometimes the pain in our lives is so intense that we can barely breathe. It doesn't feel like we deserve the pain (and perhaps we don't), and it is unjust for God to allow us to walk through the darkness. One of the worst things that someone can say at that time is to quote Romans 8:28, so before those times come we need to decide whether or not God is all good all the time, and whether or not he works in all things for good.