Proverbs 27:1-3

27:1 Do not boast ¹  about tomorrow; ² 

for you do not know ³  what a day may bring forth.

27:2 Let another ⁴  praise you, and not your own mouth; ⁵ 

someone else, ⁶  and not your own lips.

27:3 A stone is heavy and sand is weighty,

but vexation ⁷  by a fool is more burdensome ⁸  than the two of them.

[27:1]  ¹ tn The form אַל־תִּתְהַלֵּל (’al-tithallel) is the Hitpael jussive negated; it is from the common verb “to praise,” and so in this setting means “to praise oneself” or “to boast.”

[27:1]  ² sn The word “tomorrow” is a metonymy of subject, meaning what will be done tomorrow, or in the future in general.

[27:1]  ³ sn The expression “you do not know” balances the presumption of the first line, reminding the disciple of his ignorance and therefore his need for humility (e.g., Matt 6:34; Luke 12:20; Jas 4:13-16).

[27:2]  ⁴ tn Heb “a stranger.” This does not necessarily refer to a non-Israelite, as has been demonstrated before in the book of Proverbs, but these are people outside the familiar and accepted circles. The point is that such a person would be objective in speaking about your abilities and accomplishments.

[27:2]  ⁵ sn “Mouth” and “lips” are metonymies of cause; they mean “what is said.” People should try to avoid praising themselves. Self praise can easily become a form of pride, even if it begins with trivial things. It does not establish a reputation; reputation comes from what others think about you.

[27:2]  ⁶ tn “a foreigner”; KJV, ASV, NASB, NRSV “a stranger.”

[27:3]  ⁷ tn The subject matter is the vexation produced by a fool. The term כַּעַס (ca’as) means “vexation” (ASV); provocation” (NAB, NASB, NIV, NRSV); “anger” (KJV “wrath”) and usually refers to undeserved treatment. Cf. NLT “the resentment caused by a fool.”

[27:3]  ⁸ sn The contrast is made between dealing with the vexation of a fool and physical labor (moving stones and sand). More tiring is the vexation of a fool, for the mental and emotional effort it takes to deal with it is more draining than physical labor. It is, in the sense of this passage, almost unbearable.