"[hide] {one's} light under a bushel"의 정의 및 의미

What is the origin of the idiom "hide one's light under a bushel" and when to use it?

The expression "hide one's light under a bushel" comes from a biblical reference in the book of Matthew. This expression is used to encourage people not to downplay their talents or achievements. It can be applied in various contexts, reminding individuals to have confidence in their abilities and share them openly with others.