The dream may symbolize your current feelings of uncertainty and insecurity in your new job at the Grocery Outlet. The frozen isles represent a sense of stagnation and lack of progress in your work. The empty shelves could represent a lack of fulfillment or satisfaction in your job. The voice of God calling you Castiel may represent a higher power or inner wisdom guiding you through this difficult time. The fact that you are being chased and killed by an unknown force could symbolize your fears and doubts about your abilities to succeed in this new role. The constant cycle of being killed and coming back to life could represent your resilience and determination to keep trying despite setbacks. Ultimately, the dream may be urging you to trust in yourself and your abilities, and to keep pushing forward despite any challenges or obstacles that may come your way.