for God's sake

exclamation2

1. •
   An exclamation of anger, surprise, or impatience.

   • For God's sake, don't scare me like that!
   • Put some pants on, for God's sake!
2. •
   Indicating a heartfelt or urgent request.

   • “For God's sake!—quick!—quick!—put me to sleep—or, quick!—waken me!—quick!—I say to you that I am dead!” — 1850