Yea, though I walk through the valley of the ‘shadow of death’ indicates there is a massive, bright and overwhelming light of hope behind any ‘darkness’ that haunts you. Behind any/all darkness in your life is that ‘ray of hope’, which is higher, greater, and certainly brighter than any ‘doom’.
Fear is a distressing emotion aroused by impending danger, evil, pain, etc., whether the threat is real or imagined. Often it is the feeling or condition of being afraid.
Combine that with Darkness and there-in is a gripping and many times overwhelming sense of pending doom.. of certain calamity…