What is the origin of the idiom "for Christ's sake" and when to use it?

The idiom "for Christ's sake" has its origins in Christianity, where it is considered an interjection or exclamation. It is used to emphasize the importance or urgency of a matter and invokes the name of Christ to do so. The use of "sake" in this context refers to the cause, purpose, or benefit of something. The exact historical origin of this expression is not precisely documented, but it has been used in the English language for many centuries, and similar phrases invoking religious figures for emphasis have been used in various cultures.