What is the origin of the idiom "as sin" and when to use it?

The idiom "as sin" derives from the use of "sin" as a metaphor for something morally or ethically wrong or undesirable. This expression is used informally in spoken and written language to emphasize the extent or degree of a particular quality or attribute. It can be applied to both positive and negative qualities, depending on the context.By describing something as "as sin," it suggests that the quality or characteristic is exceptionally pronounced or evident, sometimes to the point of being excessive.