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.
(..) I want you to take the packet in front of you. Review it. All the answers you're looking for are inside. Start filling out the necessary information, and before you know it, you'll be on your way to new opportunities. Now, Ned, I need you to go back to your desk (..)2009 Up in the Air