The lips of knowledge (a good understanding to guide the lips and a good elocution to diffuse the knowledge) are to be preferred far before gold, and pearl, and rubies; for, 1. They are more rare in themselves, more scarce and hard to be got. There is gold in many a man's pocket that has no grace in his heart. In Solomon's time there was plenty of gold (Kg1 10:21) and abundance of rubies; every body wore them; they were to be bought in every town. But wisdom is a rare thing, a precious jewel; few have it so as to do good with it, nor is it to be purchased of the merchants. 2. They are more enriching to us and more adorning. They make us rich towards God, rich in good works, Ti1 2:9, Ti1 2:10. Most people are fond of gold, and a ruby or two will not serve, they must have a multitude of them, a cabinet of jewels; but he that has the lips of knowledge despises these, because he knows and possesses better things.

There is gold, and a multitude of rubies,.... A man may have a large quantity of either, or of both of thorn, as some men have; for there is much of them in the world, not only in mines and quarries, but in the houses and cabinets of men;

but the lips of knowledge are a precious jewel; knowledge even of things natural, and a gift of elocution to express it by, are a rare jewel, and much more precious than gold and rubies, than a multitude of them; these are not to be mentioned with it, it is not equalled by them, it is greatly superior to them; see Job 28:12; and much more spiritual knowledge, and a capacity of expressing that to the edification of others; and especially Christ, the Wisdom of God, and the knowledge of him, who is more precious than rubies, and all desirable things, in comparison of which all things are loss and dung, Pro 3:14.

The contrast denotes the greater value of knowledge (compare Pro 3:14-16).