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“Non-Christian Sources” denotes works produced outside the Christian tradition—by Jewish, Greco-Roman, Near Eastern, Islamic, or other religious and secular authors—that provide external perspectives relevant to the study of Christianity and its context. This category includes primary texts (e.g., inscriptions, classical histories, sacred writings, philosophical works) and modern scholarship based on such materials. These sources help situate Christian origins, beliefs, and practices within broader historical and cultural settings and may offer corroboration, critique, or parallel traditions. Inclusion is defined by the source’s non-Christian origin rather than its stance toward Christianity.

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