Lyric discussion by MNix 

Cover art for Isaiah 45:23 lyrics by Mountain Goats, The

in my opinion this song is about a terminal illness, still holding onto his faith that there will be more for him after death. A more personal interpretation is a man accepting the fact he is going to die, there is nothing left for him to do but remember the good journey he had, celebrate the good times and celebrate the fact soon he will be free of his pain.

@MNix I agree...