Rasmi asked:

What is the god?

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There are a number of conceptions of 'God' each peculiar to a religion. A prevalent conception of
'God' is of a supreme being with a number of different properties like omnipotence, omniscience,
infinite goodness, and a number of others. But that is the conceptof God. So the concept of 'God'
certainly exists. However, whether anything answers to that concept, or any other concept of 'God' is
a very different matter. That is the matter of whether there is a God, or whether God exists. We
should never confuse the concept of 'God' with God, and think that because the first exists, so does
the second. That would be a mistake in logic.

Kenneth Stern