Morality is concerned with right doing and wrong doing.
Thou shalt cannot be separated from thou shalt not . I have found, however, that many who are eager to praise something as morally good or condemn something as morally bad are not as eager to describe why they think that something is morally good or bad. In a way I do not blame them for their reluctance. There is also the problem that those who are supposed to be experts on the subject very rarely agree as to how to define it. Other views have it that a moral principle is one which people in fact prefer over competing principles, or else which they should prefer.