Sin is simply not doing as you're told.
Evil is simply thinking for yourself.
Cain didn't sin when he killed Able because the God character never told Cain not to kill Able. It's a sin to eat shellfish because the God character said not to eat it.
Evil is simply thinking for yourself.
Cain didn't sin when he killed Able because the God character never told Cain not to kill Able. It's a sin to eat shellfish because the God character said not to eat it.