In the summer of 1925, the Scopes “Monkey” Trial turned a Tennessee courtroom into a national stage for debating the Bible and origins. One of the most memorable barbs came when Clarence Darrow pressed William Jennings Bryan with a line that has echoed through popular culture ever since: “Where did Cain get his wife?” The insinuation—delivered to laughter and headlines—was that anyone who believes Genesis must accept an absurdity (or worse, a moral outrage). That exchange helped cement the cultural narrative that Christianity is anti-intellectual and ethically inconsistent. A century later, the same argument still circulates on social media and in classrooms. Do Christians have a good answer to the question of where Cain got his wife? This is a legitimate question. If Adam and Eve are the fountainhead of humanity (Gen 3:20; Acts 17:26), whom did their son Cain marry (Gen 4:17)? If the only available partners were siblings…