Definition & Meaning of "fall into one's lap"in English

What is the origin of the idiom "fall into someone's lap" and when to use it?

The idiom "fall into someone's lap" is used to refer to a situation where something unexpected or fortunate happens to someone without much effort on their part. The origin of this idiom can be traced to the idea of a valuable or desirable object literally falling into someone's lap, as if it were a gift from the heavens. It is often used to describe unexpected opportunities, windfalls, or favorable circumstances.