Christians what would you do?

if it were proven beyond a shadow of a doubt that your Jesus was nothing more than a Myth? If it were proven that your Jesus in fact never did rise from the dead after 3 days and was simply an ordinary Rabbi? Or even if it were proven that this Man never existed and was simply an adaptation of other religious figures? Please do not answer with "this will never happen as my Jesus is real". That is not what i am asking. Thank you.