The fact that we live in a world that is fallen, broken, and failing makes this psalm and the many like it so vital.  We need a God who will remain firm and strong when the world around us falls to pieces.  I love that there is so much confidence in these psalms.  It gives us a shelter when times are dark.  And the hymn by Martin Luther is so clear on this concept that it is one of my favorites.  “A Mighty Fortress is our God”