Jesus's final command to his disciples was to make disciples of all nations. But who are the nations? How do we know we are being obedient to the task? Do our current lists of ethnolinguistic people groups sufficiently answer the question? For the last fifty years, missiologists and missionaries have discussed this topic, but much of the conversation has been focused on definitions that give little attention to biblical theology. When we explore how the Bible describes "the nations," we fi...