In any discussion of moral standards I think that it might be helpful to discuss the difference between sin and evil. But before attempting that, let us examine a similar situation in the secular realm. Governments at every level pass legislation that prohibits certain actions. We use the word 'crime' to refer to the deliberate breaking of such a law. However, is the commission of a crime the same thing as committing an evil act? Here we come up against just how we might define evil. For the purposes of this discussion let me give a very simple definition:
Evil --- any deliberate action or inaction which compromises the physical or psychological integrity of a human being.
This, of course, is a narrow definition and we could likely spend a very long time extending it and refining it. Let us leave that at least for the moment. The point that I am sneaking up on here is that 'what is evil is not necessarily a crime' and conversely 'what is a crime is not necessarily evil'. To me this is obvious but let me just attempt an illustration of each statement.
First, 'what is evil is not necessarily a crime'. By my definition above, the killing of another human being is to be regarded as an evil act. However, the law does not regard this as a crime if it is done in self defence or in war.
Second, 'what is a crime is not necessarily evil'. In Singapore, for example, it is a crime to chew gum. I think most would not quibble about this not being evil according to the above definition.
Can we make similar distinctions in the spiritual realm concerning sin and evil? I believe that we can. First, we need a working definition of sin. Let me suggest a very simple definition:
Sin --- doing that which is forbidden by a spiritual authority.
Once again, we could debate this definition. Perhaps the most controversial aspect of this definition might involve whether or not a spiritual authority, such as a church or a scripture, can actually express the will of a Deity. Setting that aside, we once again are faced with two problems. The point being that 'what is evil is not necessarily a sin' and conversely 'what is a sin is not necessarily evil'.
First, 'what is evil is not necessarily a sin'. I think that most would agree that to torture someone is an evil. However, if we just look at Christian scripture, I do not see any specific prohibition that would make torture a sin. A similar argument could be applied to female genital mutilation (circumcision).
Second, 'what is a sin is not necessarily evil'. Here, we can get into a very much more controversial debates. It is certainly true that Christian scripture regards homosexual actions as sinful. However, within society at large and within a number of Christian churches in particular, homosexual behaviour is no longer regarded as an evil in and of itself. It is also certainly true that Jewish scripture regards the breaking of the dietary laws as sinful and even an abomination. However, within society at large and within a number of Jewish traditions in particular, the breaking of the dietary laws is no longer regarded as an evil in and of itself.
The distinctions made here between crime and evil and also between sin and evil lead us in a real quandry for society at large. The western world has become, and is increasingly becoming, extremely diverse in language, culture and religion. There is also no real way of reversing this. Since different religions cannot agree on what is sin, I do not think that we can rely on religion entirely to inform our moral and ethical behaviour. Since what is regarded as sin has so often in the past led us into framing our laws to determine what is criminal, I think we need a new approach to the problem. We need an approach that avoids the imposition of one set of religious beliefs on society at large --- an approach broadly constructed on a concensus of what is evil and therefore what is criminal. Leave what is regarded as sin to the consciences of those in particular religious traditions.