In literary terms, what does the phrase "know them by their fruits" imply?

The phrase "know them by their fruits" implies that one should evaluate a person's character based on their actions and the outcomes those actions produce. This expression suggests that the results of a person's behavior—often referred to metaphorically as "fruits"—reveal their true qualities, intentions, and moral foundation. It reinforces the idea that outward appearances may be misleading, but true character is evidenced through behavior. The phrase has its roots in various philosophical and religious contexts, emphasizing that what someone does is a clearer indicator of who they are than superficial traits.