There has never been a single legislator who, in proposing extraordinary laws, did not have recourse to God, for otherwise they would not be accepted, since many benefits known to a prudent man do not have evident persuasive reasons.
Gist of Idea
All legislators invoke God in support of extraordinary laws, because their justification is not obvious
Niccolo Machiavelli (The Discourses , 1.11), quoted by Jean-Jacques Rousseau - The Social Contract (tr Cress) II.7 n8
It does seem to be an important role for God and state religion, to give support to decisions and laws which might not be intrinsically popular.
Rousseau,Jean-Jacques: 'The Basic Political Writings', ed/tr. Cress,Donald A. [Hackett 1987], p.165