Nietzsche's voice

Although Nietzsche puts the statement "God is Dead" into the mouth of a "madman" in The Gay Science, he also uses the phrase in his own voice in sections 108 and 343 of the same book. In the madman's passage, the man is described as running through a marketplace shouting, "I seek God! I seek God!" He arouses some amusement; no one takes him seriously. Maybe he took an ocean voyage? Lost his way like a little child? Maybe he's afraid of us (non-believers) and is hiding?-- much laughter. Frustrated, the madman smashes his lantern on the ground, crying out that "God is dead, and we have killed him, you and I!" "But I have come too soon," he immediately realizes, as his detractors of a minute before stare in astonishment: people cannot yet see that they have killed God. He goes on to say:
Earlier in the book (section 108), Nietzsche wrote "God is Dead; but given the way of men, there may still be caves for thousands of years in which his shadow will be shown. And we — we still have to vanquish his shadow, too." The protagonist in Thus Spoke Zarathustra also speaks the words, commenting to himself after visiting a hermit who, every day, sings songs and lives to glorify his god:
What is more, Zarathustra later refers not only to the death of God, but states: 'Dead are all the Gods'. It is not just one morality that has died, but all of them, to be replaced by the life of the übermensch, the new man: