They lent us the money with the 'assurance' that they would be repaid soon.
She gave him every 'assurance' that she would be there when he returned.
They sought 'assurances' from the school that their children were safe.
(..) We are agreed. The traffic in drugs will be permitted, but controlled. Don Corleone will give us protection in the east, and there will be peace. I must have strict assurance from Corleone. As time goes by and his position becomes stronger, will he attempt any individual vendetta? (..)1972 The Godfather