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]
(..) From the way she's carrying, Maester Wolkan says it looks like a boy. Sure of what? That she's pregnant. I mean... how can you tell? Maester Wolkan has assured us beyond all doubt. So how did you manage it? Manage what? Getting her pregnant. I imagine you're familiar with the procedure. Of course, (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5