"SIN" is something very subjective to different societies and cultures.
Define "SIN": one could say "Do not disobey, that is a sin"; I could object "Do not lead into temptation, that is an even worse sin".
What's worse, stealing cookies from the cookie jar, or telling an otherwise unaware child "there's a cookie jar on the table full of delicious cookies BUT YOU MUST NOT EAT THEM!"
To some, "alcohol = sin". Generally white, anglosaxon Protestants (or DIY Born Again New Age Christians) will BAN alcohol from their home.
In the Mediterranean, a family meal is not a family meal without at leat half a glass of wine in Mom & Dad's glass.
In that same area, drinking until you're sick and drunk is considered self-ridicule and self-humiliaiton,
while in Northern Europe binge drinking is often considered to be THE fun thing to do on weekends.
From which "alcohol shall not enter this house / no drink in my home" etc...
So, what is sin ? it is the violation of a rule generated not by law but by religion because the "sinner" disagrees with the validity of the rule.
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