What is the origin of the idiom "bag and baggage" and when to use it?

The idiom "bag and baggage" has its origins in the 16th century and is related to the practice of travelers carrying their belongings in bags and other luggage. "Bag" refers to personal belongings in a bag, and "baggage" refers to all the luggage a person carries when moving or traveling. People use this phrase to mean "with all one's possessions" or "including everything." It often implies leaving or departing, usually from a place, often with a sense of finality.