The relationship between immigration and Christian ethics is of particular importance in the era of mass migration and debates over border policy, citizenship, societal cohesion, ethnic replacement, and diversity, equity, and inclusion. Christian interactions with these issues tend to be formulated within a positive but narrow missiological framework that prioritises the potential for evangelism and church growth. Little attention is given to historical ressourcement in the construction of broader ethical and theological responses. Yet revisiting historical debates can provide new perspectives that challenge current paradigms and provide a position from which to give a more balanced critique of the pros and cons of immigration. Early modern Protestants experienced the beginnings of globalisation in the age of European expansion, migrations of religious refugees, and political, social, and economic upheavals in what has been called the general crisis of the seventeenth-century. This paper builds on recent scholarly interest in Protestant reception of the Ethics and Politics to examine how Protestant thinkers in these circumstances received, qualified, or rejected Aristotle’s comments on immigration and its consequences for a society. By doing so it aims to provide a broader theoretical framework on which contemporary Christians can engage one of the most consequential social issues of our time.