With three experimental studies using data from young adults living in a highly religious context, namely Turkey (N = 483), the current research examines how being watched by a third person versus God affects the perceived likelihood ratings of harmful versus impure immoral behaviors. We hypothesized that respondents would expect others to more strongly refrain from acting immorally when they believed they were being watched by God compared to a third person, and that this effect would be more pronounced for impure compared to harmful moral transgressions. The God condition was perceived as more effective than the third-person surveillance condition when immoral behaviors were harmful. However, for severe impure transgressions, neither surveillance condition was perceived as effective. We discuss our findings in light of contemporary morality research, outline the role of possible cultural and individual-level boundary conditions, and highlight the scientific and practical contributions of our research to the field.