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 23:1(Pro. 23:1-35)
Avoid the dangers of gluttony.
pro 23:2put a knife--an Eastern figure for putting restraint on the appetite.
pro 23:3are deceitful meat--though well tasted, injurious.
pro 23:4(Compare Ti1 6:9-10).
thine own wisdom--which regards riches intrinsically as a blessing.
pro 23:5Wilt . . . eyes--As the eyes fly after or seek riches, they are not, that is, either become transitory or unsatisfying; fully expressed by their flying away.
pro 23:6Beware of deceitful men, whose courtesies even you will repent of having accepted.
evil eye--or purpose (Pro 22:9; Deu 15:9; Mat 6:23).
pro 23:8The morsel . . . words--that is, disgusted with his true character, all pleasant intercourse will be destroyed.
pro 23:9(Compare Pro 9:8). "Cast not your pearls before swine" (Mat 7:6).
pro 23:10(Compare Pro 22:22-23).
pro 23:11redeemer--or avenger (Lev 25:25-26; Num 35:12), hence advocate (Job 19:25).
plead . . . thee--(Compare Job 31:21; Psa 35:1; Psa 68:5).
pro 23:12Here begins another series of precepts.
pro 23:13While there is little danger that the use of the "divine ordinance of the rod" will produce bodily harm, there is great hope of spiritual good.
pro 23:15The pleasure afforded the teacher by the pupil's progress is a motive to diligence.
pro 23:16my reins--(Compare Psa 7:9).
pro 23:17(Compare Margin). The prosperity of the wicked is short.
pro 23:18an end--or, "hereafter," another time, when apparent inequalities shall be adjusted (compare Psa 37:28-38).
pro 23:19guide . . . way--or direct thy thoughts to a right course of conduct (compare Pro 4:4; Pro 9:6).
pro 23:20riotous . . . flesh--prodigal, or eating more than necessary. Instead of "their flesh" (compare Margin), better, "flesh to them," that is, used for pleasure.
pro 23:21drowsiness--the dreamy sleep of the slothful.
pro 23:22Hearken--that is, obey (Pro 1:8; Eph 6:1).
despise . . . old--Adults revere the parents whom, as children, they once obeyed.
pro 23:23Buy--literally, "get" (Pro 4:5).
truth--generally and specially as opposed to errors of all kinds.
pro 23:24(Compare Pro 10:1; Pro 17:21, Pro 17:25).
pro 23:26A solemn warning against whoredom and drunkenness (Hos 4:11).
give me--This is the address of that divine wisdom so often presented (Pro 8:1; Pro 9:3, &c.).
my ways--such as I teach you (Pro 3:17; Pro 9:6).
pro 23:27deep ditch--a narrow pit, out of which it is hard to climb.
lieth in wait--to ensnare men into the pit, as hunters entrap game (compare Pro 22:14).
pro 23:28increaseth . . . transgressors-- (Pro 5:8-10). The vice alluded to is peculiarly hardening to the heart.
pro 23:29This picture is often sadly realized now.
mixed wine--(Compare Pro 9:2; Isa 5:11).
pro 23:31when . . . red--the color denoting greater strength (compare Gen 49:11; Deu 32:14).
giveth . . . cup--literally, "gives its eye," that is, sparkles.
moveth . . . aright--Perhaps its foaming is meant.
pro 23:32The acute miseries resulting from drunkenness contrasted with the temptations.
pro 23:33The moral effects: it inflames passion (Gen 19:31, Gen 19:35), lays open the heart, produces insensibility to the greatest dangers, and debars from reformation, under the severest sufferings.
pro 23:35awake--that is, from drunkenness (Gen 9:24). This is the language rather of acts than of the tongue.