The answer is: Silver

Pro 10:20

In Proverbs 10:20, the tongue of the just is likened to silver, suggesting that just words, like silver, are precious and valuable. The metaphor beautifully conveys the idea that righteous speech is not only worthy but has the power to enrich lives, much like how silver can enhance and transform leading it to a life filled with wisdom and grace.

Interestingly, silver has been seen in various cultures as a symbol of purity and high worth. Ancient civilizations often compared wise counsel and virtuous character to precious metals because they are rare and sought after. Even today, we might say someone “knows the value of words,” capturing the essence of this comparison.

The distinction made between the just and the unjust here is quite significant, as it contrasts the quality of speech within people who seek to live righteously versus those who do not. One might relate this notion back to biblical echoes of characters known for their wisdom, like King Solomon, renowned for his ability to govern with judgement and a pure heart, making his counsel highly sought after—much like a piece of priceless silver.

So, when you think of harnessing the power of your words, think about how they're more than mere sounds—they are tools that can uplift, inspire, or even bring someone close to knowledge and understanding, just as silver does in physical form. A little care in word choice can indeed lead to a gold-mine of righteousness.