His boss 'assured' him that he had her continued support. = His boss 'assured' him of her continued support. = “You have my continued support,” his boss 'assured' him.
You can 'rest assured' [=you can be sure] that these mistakes won't happen again. = 'Rest assured', these mistakes won't happen again.
They are not 'assured of' being paid. [=it is not certain that they will be paid]
(..) my country's most sincere sympathies on this horrific tragedy. If there is anything our people can do in response to this tremendous act of cowardice, rest assured, we will do it. I appreciate that. You can begin by removing your destroyers from the Strait of Hormuz. Mr. President, excuse me, (..)2016 TvShow: Designated Survivor Title: Pilot Season: 1 Episode 1