A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
pro 25:1(Pro. 25:1-28)
The character of these proverbs sustains the title (see Introduction).
also--refers to the former part of the book.
copied out--literally, "transferred," that is, from some other book to this; not given from memory.
pro 25:2God's unsearchableness impresses us with awe (compare Isa 45:15; Rom 11:33). But kings, being finite, should confer with wise counsellors;
pro 25:3Ye wisely keeping state secrets, which to common men are as inaccessible heights and depths.
pro 25:4As separating impurities from ore leaves pure silver, so taking from a king wicked counsellors leaves a wise and beneficent government.
pro 25:5before--or, "in presence of," as courtiers stood about a king.
pro 25:6Do not intrude into the presence of the king, for the elevation of the humble is honorable, but the humbling of the proud disgraceful (Luk 14:8-10).
pro 25:8(Compare Pro 3:30).
lest . . . shame--lest you do what you ought not, when shamed by defeat, or "lest thou art shut out from doing any thing."
pro 25:9(Compare Mat 5:25, Margin).
secret--that is, of your opponent, for his disadvantage, and so you be disgraced, not having discussed your difficulties with him.
pro 25:11a word fitly--literally, "quickly," as wheels roll, just in time. The comparison as apples . . . silver gives a like sense.
apples, &c.--either real apples of golden color, in a silver network basket, or imitations on silver embroidery.
pro 25:12Those who desire to know and do rightly, most highly esteem good counsel (Pro 9:9; Pro 15:31). The listening ear is better than one hung with gold.
pro 25:13Snow from mountains was used to cool drinks; so refreshing is a faithful messenger (Pro 13:17).
pro 25:14clouds--literally, "vapors" (Jer 10:13), clouds only in appearance.
a false gift--promised, but not given.
pro 25:15Gentleness and kindness overcome the most powerful and obstinate.
long forbearing--or, "slowness to anger" (Pro 14:29; Pro 15:18).
pro 25:16A comparison, as a surfeit of honey produces physical disgust, so your company, however agreeable in moderation, may, if excessive, lead your friend to hate you.
pro 25:18A false witness is as destructive to reputation, as such weapons to the body (Pro 24:28).
beareth . . . witness--literally, "answereth questions," as before a judge, against his neighbor.
pro 25:19Treachery annoys as well as deceives.
pro 25:20Not only is the incongruity of songs (that is, joyful) and sadness meant, but an accession of sadness, by want of sympathy, is implied.
pro 25:21(Compare Mat 5:44; Rom 12:20). As metals are melted by heaping coals upon them, so is the heart softened by kindness.
pro 25:23Better, "As the north wind bringeth forth (Psa 90:2) or produces rain, so does a concealed or slandering tongue produce anger."
pro 25:24(Compare Pro 21:9, Pro 21:19).
pro 25:25(Compare Pro 25:13).
good news--that is, of some loved interest or absent friend, the more grateful as coming from afar.
pro 25:26From troubled fountains and corrupt springs no healthy water is to be had, so when the righteous are oppressed by the wicked, their power for good is lessened or destroyed.
pro 25:27Satiety surfeits (Pro 25:16); so men who are self-glorious find shame.
is not glory--"not" is supplied from the first clause, or "is grievous," in which sense a similar word is used (Pro 27:2).
pro 25:28Such are exposed to the incursions of evil thoughts and successful temptations.