Nothing instilled more fear in the tomb raiders of times past, than the possibility of encountering a curse that warned of dire consequences for those that did not heed its warning.  In ancient Egypt, #curses were sometimes placed on tomb entrances to protect the sacred monument from being disturbed or looted. Inscriptions sometimes spoke of the deceased coming back to life to seek revenge, or called for judgement to be taken in the underworld. Anyone who ignored such warnings, would do so at their own peril.

Source: Tomb Curses of Ancient Egypt: Magical Incantations of the Dead | Ancient Origins