20 He that walketh with wise men shall be wise: but a companion of fools shall be destroyed.

      Note, 1. Those that would be good must keep good company, which is an evidence for them that they would be good (men's character is known by the company they choose) and will be a means of making them good, of showing them the way and of quickening and encouraging them in it. He that would be himself wise must walk with those that are so, must choose such for his intimate acquaintance, and converse with them accordingly; must ask and receive instruction from them, and keep up pious and profitable talk with them. Miss not the discourse of the elders, for they also learned of their fathers, Ecclesiasticus viii. 9. And (Ecclesiasticus vi. 35), Be willing to hear every godly discourse, and let not the parables of understanding escape thee. 2. Multitudes are brought to ruin by bad company: A companion of fools shall be broken (so some), shall be known (so the LXX.), known to be a fool; noscitur ex socio--he is known by his company. He will be like them (so some), will be made wicked (so others); it comes all to one, for all those, and those only, that make themselves wicked, will be destroyed, and those that associate with evil-doers are debauched, and so undone, and at last ascribe their death to it.

      7 Go from the presence of a foolish man, when thou perceivest not in him the lips of knowledge.

      See here, 1. How we may discern a fool and discover him, a wicked man, for he is a foolish man. If we perceive not in him the lips of knowledge, if we find there is no relish or savour of piety in his discourse, that his communication is all corrupt and corrupting, and nothing in it good and to the use of edifying, we may conclude the treasure is bad. 2. How we must decline such a one and depart from him: Go from his presence, for thou perceivest there is no good to be gotten by his company, but danger of getting hurt by it. Sometimes the only way we have of reproving wicked discourse and witnessing against it is by leaving the company and going out of the hearing of it.

      7 Whoso keepeth the law is a wise son: but he that is a companion of riotous men shameth his father.

      Note, 1. Religion is true wisdom, and it makes men wise in every relation. He that conscientiously keeps the law is wise, and he will be particularly a wise son, that is, will act discreetly towards his parents, for the law of God teaches him to do so. 2. Bad company is a great hindrance to religion. Those that are companions of riotous men, that choose such for their companions and delight in their conversation, will certainly be drawn from keeping the law of God and drawn to transgress it, Ps. cxix. 115. 3. Wickedness is not only a reproach to the sinner himself, but to all that are akin to him. He that keeps rakish company, and spends his time and money with them, not only grieves his parents, but shames them; it turns to their disrepute, as if they had not done their duty to him. They are ashamed that a child of theirs should be scandalous and abusive to their neighbours.

      3 Whoso loveth wisdom rejoiceth his father: but he that keepeth company with harlots spendeth his substance.

      Both the parts of this verse repeat what has been often said, but, on comparing them together, the sense of them will be enlarged from each other. 1. Be it observed, to the honour of a virtuous young man, that he loves wisdom, he is a philosopher (for that signifies a lover of wisdom), for religion is the best philosophy; he avoids bad company, and especially the company of lewd women. Hereby he rejoices his parents, and has the satisfaction of being a comfort to them, and increases his estate, and is likely to live comfortably. 2. Be it observed, to the reproach of a vicious young man, that he hates wisdom; he keeps company with scandalous women, who will be his ruin, both in soul and body; he grieves his parents, and, like the prodigal son, devours their living with harlots. Nothing will beggar men sooner than the lusts of uncleanness; and the best preservative from those ruinous lusts is wisdom.