Legal instruction distinguishes foundational principles, binding limits, and particular applications. Principles establish the direction of a field, limits define what is permitted or required, and individual rulings regulate identifiable cases.
Protecting rights is a broad concern in social law, but the rulings of marriage and inheritance determine what that concern means in concrete situations. Establishing worship is a foundational command; proper observance also requires practical specification.
Two interpretive mistakes follow from ignoring these levels: treating one particular ruling as if it were the entire system, or invoking a broad purpose to override an explicit legal boundary.