I believe the ressurection of Jesus was as literal and physical as it can get. His ressurection was his assurance of the power of the LORD. None of us can ressurect people so this is surly a symbol of Gods power. Jesus was also ressrected in a perfect human body, like the ones believers will recive at rapture. If Jesus just died and that was it, surly his disciples and followers would call him a liar and not believe him anymore. Without this event, christianity would have been shot down a lot sooner.