Definición y Significado de "a sign of the times"

What is the origin of the idiom "a sign of the times" and when to use it?

The origin of the idiom "a sign of the times" can be traced back to biblical references, specifically to the New Testament, in the book of Matthew. It is often used in social, cultural, or political discussions to analyze and comment on the cultural, technological, or societal shifts that are perceived as significant and indicative of the current time.