The characters in the book keep talking about Fate. But I interpret the story a bit differently. The family of Húrin had many chances of changing their fate. If Morwen comes to Doriath earlier instead of being too proud to ask for help, if Túrin goes back to Doriath instead of being proud and joining the outlaws, if he listens to Ulmo's advice in Nargothrond, if Morwen and Níniel stay in Doriath instead of going to look for Túrin, and probably many more I can't recall at the moment. Each time they were too proud to accept help and listen to good advice. What I think Tolkien was trying to say is that God is always there to help you, but you also have to do your part and you have the free will to reject this help. He won't perform open miracles most of the time, but if you develop your character, you will be able to receive divine providence. It's the story of why bad things happen to good people. What do you think?