In South Korea, the processes of rapid modernization after the Second World War were accompanied by an upturn in the religion that has suffered the heaviest losses in Europe: Protestant Christianity. The analysis shows that the rise of Protestantism in South Korea can be attributed to a number of factors. The provision of support networks of solidarity for individuals exposed to the rapid processes of modernization, industrialization, and urbanization played just as much a role as the productive acceptance of widespread expectations of advancement and prosperity, the link to the traditions of Korean folk religion, the capacity to mobilize resources, and the role-model effect of successful Protestant elites. What may have been most significant, though, is that Protestantism was able to fulfil non-religious functions, too. However, religious growth has clearly reached a limit, since connecting with religious communities to achieve non-religious goals seems to be becoming less necessary.