A prudent man keeps his knowledge to himself, but the heart of fools blurts out folly.
Keeping knowledge to ourselves seems counter intuitive. Certainly God wants us to instruct others about Jesus Christ. He also doesn’t want us to lie by withholding something that we know.
This verse doesn’t mean anything like that however. This is in reference to people who we’ve all encountered who have the need to tell everyone everything that they know. Sometimes it’s arrogance that makes a person want to say everything they know, other times it is ignorance that no one else wants to know or they would have asked.
A wise man once said, “It is better to remain silent and thought a fool than to open one’s mouth and remove all doubt.” A wise person recognizes that they don’t know everything and won’t pretend to be an expert on all topics.
Fools however will expose themselves as frauds as they talk about things they have no clue about. In the end, we’re better off just keeping our mouths shut if we don’t have anything constructive to add to a conversation. We don’t need to talk every moment of the day.