  And yet, turning to some stronger senses in which, on the contrary, reason is supported by revelation, Saadya (in a section in chapter 3 of the Amânât addressing why it is necessary for God to send “messengers and prophets”) provides a general explanation not only (as above) of why the “laws of reason” are themselves revealed, but of why the “laws of reason” must be further accompanied by additional revealed information. In this discussion, Saadya stresses that even the most rational moral ideal is beset with vagueness about the details of how best to effect the sought after result; and so, while reason can tell us that we ought not commit adultery, it doesn't necessarily provide us with the sorts of ‘when, where and how’ details that are needed to translate even the best moral theory into actual practice. In effect, Saadya explains that,