It may perhaps be said that this comparison has no force for Libertarians, who consider the essence of Virtue to lie in free choice. But to say that any free choice is virtuous would be a paradox from which most Libertarians---admitting that Evil may be freely chosen no less than Good---would recoil. It must therefore be Free choice of good that is conceived to realise the divine end: and if so, the arguments for the utilitarian interpretation of Good---thus freely chosen---would still be applicable mutatis mutandis: and if so, the arguments for regarding rules of utilitarian duty as divinely sanctioned would be similarly applicable.

ME Book 4 Chapter 6 Section 4