it is a sin
Examples
People sometimes ask me if it is a sin in the Church of Emacs to use vi. Using a free version of vi is not a sin; it is a penance. So happy hacking.
It is a sin not to do what one is capable of doing.
It is a sin of the soul to force young people into opinions ... but it is culpable neglect not to impel young people into experiences.
All a man has is pride. Sometimes you have it so much it is a sin. We have all done things for pride that we knew were impossible. We didn't care. But a man must implement his pride with intelligence and care.
It is a sin to lye on the Devil.
It is a sin against hospitality to open the doors and shut up the countenance.