What is the Meaning of the Expression
FOR HEAVEN’S SAKE?
an exclamation showing surprise, anger, impatience, or some other emotion, depending on the context
1. For heaven’s sake! How many times do I have to tell you?! Be careful with that knife; it’s sharp!
2. Oh, for heaven’s sake! Just phone them and get it over with. Delaying it isn’t making the situation any better.