"God" with a capital "g" would surely only be correct if it was the first word in a sentence or if the writer of the word believed only in one god.
I can write the word god without capitalization becaue I don't believe in the existence of gods.
Out of respect when writing for a Christian, as I have in my question to you, I capitalize the "g", but only because I know you are a Catholic.
I would normally write Christian and Catholic, because they are proper nouns. I would normally write "god" because to me, the word isn't a proper noun.
I can write the word god without capitalization becaue I don't believe in the existence of gods.
Out of respect when writing for a Christian, as I have in my question to you, I capitalize the "g", but only because I know you are a Catholic.
I would normally write Christian and Catholic, because they are proper nouns. I would normally write "god" because to me, the word isn't a proper noun.