They are cultural norms. People attribute these social orders to divine orders in order for society to be able to enforce them. It becomes the "supreme law" because it is stated and believed to come from God. I'm not entirely sure how you could imagine eating shellfish as an effect on the soul? Dietary restrictions are typically health regulations. In this country we say that authority is the FDA. In ancient Israel it was God. Eating pork doesn't send the soul into ruin. But it may get the body sick if not handled properly.I think this is a straw man. I never called the commandments cultural norms, nor do I believe them to be so. The commandments of G-d are realities that effect the soul for positive or negative to one degree or another.
Oh dear, this sounds like the robed Grand Inquisitor saving the soul of the sinner by purifying him through torture and execution. I really don't have any idea whatsoever how torture and death purifies one's soul! I think love does a better job of that then some dude justifying himself killing someone else in the name of his god.Aside from that, the purpose of capital punishment - or indeed any punishment - is to rectify the person's soul of the sin he had committed.
This sounds very, very terrifying and psychotic. A very dangerous psychotic who kills thinking he's saving souls. This is no prophet, but a sociopath.A prophet, who has already entered a state of being able to see what happens in heaven or at least aware of it, should certainly be able to negate his personal feelings towards a loved one, in order to help them attain rectification.
Excersise builds endurance. Punishment destroys.To a degree we do that already, when we put our children through a difficult exercise in order to help them in some difficulty.