13 In the lips of him that hath understanding wisdom is found: but a rod is for the back of him that is void of understanding.

      Observe, 1. Wisdom and grace are the honour of good men: He that has understanding, that good understanding which those have that do the commandments, wisdom is found in his lips, that is, it is discovered to be there, and consequently that he has within a good treasure of it, and it is derived thence for the benefit of others. It is a man's honour to have wisdom, but much more to be instrumental to make others wise. 2. Folly and sin are the shame of bad men: A rod is for the back of him that is void of understanding--of him that wants a heart; he exposes himself to the lashes of his own conscience, to the scourges of the tongue, to the censures of the magistrate, and to the righteous judgments of God. Those that foolishly and wilfully go on in wicked ways are preparing rods for themselves, the marks of which will be their perpetual disgrace.

      20 The tongue of the just is as choice silver: the heart of the wicked is little worth.   21 The lips of the righteous feed many: but fools die for want of wisdom.

      We are here taught how to value men, not by their wealth and preferment in the world, but by their virtue.

      I. Good men are good for something. Though they may be poor and low in the world, and may not have power and riches to do good with, yet, as long as they have a mouth to speak, that will make them valuable and useful, and upon that account we must honour those that fear the Lord, because out of the good treasure of their heart they bring forth good things. 1. This makes them valuable: The tongue of the just is as choice silver; they are sincere, freed from the dross of guile and evil design. God's words are compared to silver purified (Ps. xii. 6), for they may be relied on; and such are the words of just men. They are of weight and worth, and will enrich those that hear them with wisdom, which is better than choice silver. 2. It makes them useful: The lips of the righteous feed many; for they are full of the word of God, which is the bread of life, and that sound doctrine wherewith souls are nourished up. Pious discourse is spiritual food to the needy, to the hungry.

      II. Bad men are good for nothing. 1. One can get no good by them: The heart of the wicked is little worth, and therefore that which comes out of the abundance of his heart cannot be worth much. His principles, his notions, his thoughts, his purposes, and all the things that fill him, and affect him, are worldly and carnal, and therefore of no value. He that is of the earth speaks of the earth, and neither understands nor relishes the things of God, John iii. 31; 1 Cor. ii. 14. The wicked man pretends that, though he does not talk of religion as the just do, yet he has it within him, and thanks God that his heart is good; but he that searches the heart here says the contrary: It is nothing worth. 2. One can do no good to them. While many are fed by the lips of the righteous, fools die for want of wisdom; and fools indeed they are to die for want of that which they might so easily come by. Fools die for want of a heart (so the word is); they perish for want of consideration and resolution; they have no heart to do any thing for their own good. While the righteous feed others fools starve themselves.