Pax deorum

Pax, though usually translated into English as "peace," was a compact, bargain, or agreement. In religious usage, the harmony or accord between the divine and human was the pax deorum or pax divom ("the peace of the gods" or "divine peace"). Pax deorum was only given in return for correct religious practice. Religious error (vitium) and impiety led to divine disharmony and ira deorum (the anger of the gods).