There is no 'necessary connection' between what is legal and what is moral. [=what is legal does not always have to be moral and what is moral does not always have to be legal]
Higher prices are a 'necessary consequence' of the company's new services.
I'll 'do the necessary' [=do whatever is necessary] to get the job done.
(..) Yes. Yes, yes. All right, all right, all right. You're okay. You'll be all right. Get your hand taken care of. I'm sorry, but it was necessary. As for our problem with Providence... ...let's not cry over spilled guineas. Who let this IRA motherfucker in my bar? Just kidding. How's your mother? (..)2006 The Departed