But what is probable and what is moral cannot simply be the same thing. I may be taking a risk of some sort to do a good work, that certainly doesn't make it an immoral act and absolutely to do what is 'safest' is certainly not always moral. Laws/Rules must exist to maintain social order and security, but there is no law anywhere that under some circumstance it isn't moral to violate, and there is no legal act which under some circumstance isn't immoral. The Hebrews tried to build a moral culture around law and Jesus told them that their project had been a failure. Law always fails as an ultimate arbiter of morality, and morality as the basis of law is a slippery slope to theocracy/tyranny