New possibilities

Nietzsche believed there could be positive possibilities for humans without God. Relinquishing the belief in God opens the way for human creative abilities to fully develop. The Christian God, he wrote, would no longer stand in the way, so human beings might stop turning their eyes toward a supernatural realm and begin to acknowledge the value of this world.
Nietzsche uses the metaphor of an open sea, which can be both exhilarating and terrifying. The people who eventually learn to create their lives anew will represent a new stage in human existence, the Übermensch — i.e. the personal archetype who, through the conquest of their own nihilism, themselves become a sort of mythical hero. The 'death of God' is the motivation for Nietzsche's last (uncompleted) philosophical project, the 'revaluation of all values'.