What do you think is the oldest swear word and do you think we still use it?

I got to wondering what was the polytheistic equivalent to God-damn which got me to wondering if, since hell is a relatively modern concept would the word damn or its equivalent be even a part of early cursing.
Which led me to the wonder if perhaps cursing would have been more scatological or sexual or religious based, which, in turn, led me to the internet where I learned that “Curse words tend to based on whatever societies find most taboo, and most scary, and most interesting,” says Melissa Mohr, whose book Holy Sh*t: A Brief History of Swearing examines how and why people have resorted to profane language, from ancient Roman times to the present.
Which led me back to Fluther to ask what your opinions are?