What was the purpose of altering the text of the Lord's prayer?

The word
"nada" or nothing is inserted by the
waiter into the Lord's Prayer to turn it into a
kind of existentialist . The
older waiter in the story personifies the story's general theme of

existential anxiety in the face of a meaningless universe from which God has been
removed. He's
a world-weary soul for whom the old certainties of religion no
longer provide any shape or
meaning to his life.

Once God
has been removed from the waiter's worldview,
the Lord's Prayer is just a
form of words. And just as God has been replaced by nothingness, so
the words
of the Lord's Prayer have been suitably altered to take account of the
waiter's
nihilistic stance towards the...