The key to understanding the Save a Virgin do me instead shirt. To do that, we must start with the bad news. The Old Testament Law was given to Israel during the time of Moses. The Law can be thought of as a measuring stick, and sin is anything that falls short of perfect according to that standard. The righteous requirement of the Law is so stringent that no human being could possibly follow it perfectly, in letter or in spirit. Despite ourgoodness or badness relative to each other.