P. is the personification of the Greek goddess of loyalty and faith. Except for Thgn. 1137 (2nd half of the 6th cent. BC), P. rarely appears as a deity, and only very late. She had a cult of which at least a shrine in Athens can be identified in Diogenianus 2,80. P. was regarded by the Romans as equivalent to Fides . It was not until Christianity that the term pistis came to mean a belief in revealed truth (see section E below).