how can a connection be established between ‘to speak’ (bhā-) and ‘divine law’ (fas)? … what has been said, Lat. fatum, or what is being said, fama … is charged, as impersonal speech, with a positive religious value
Benveniste argues that the Latin fas (‘divine law’) derives its authority from the root of impersonal, divinely charged speech, revealing that divine law was conceived as utterance that transcends the individual speaker.
, Indo European Language and Society, 1973thesis