Wiktionary
a. (context idiomatic English) dying, close to death.
Wikipedia
Knocking on Heaven's Door is a 2014 Nigerian musical romantic drama film written by Vivian Chiji, produced by Emem Isong and directed by Desmond Elliot, starring Majid Michel, Adesua Etomi and Blossom Chukwujekwu. The film premièred on 18 April 2014 at Silverbird Galleria, Victoria Island, Lagos.
It tells a story of the marital relationship between Debbie ( Adesua Etomi) and Moses ( Blossom Chukwujekwu), and how an untold story from Moses' past tries to jeopardize their seemingly flawless union. The story takes an intriguing turn when a music producer Thomas Dacosta (Majid Michel) enters into their lives.
Usage examples of "knocking on heaven's door".
She meant 'Knocking On Heaven's Door', and then she meant 'Fire And Rain', and then she meant 'Both Sides Now'.