Random thought on religion.

So if I’m reading a book from the 18th or 19th century, I’m told that the racism and sexism were part of the culture. Similarly when i read Ian Fleming’s James bond novels from the 60’s and he uses the word “nigger” or “chink” this is also seen as sign of the times but when I choose to question the bible as being a book that reflects it time I’m a heathen, Why are we so quick to denounce some books that reflect their time but not others.