[10:21] 1 tn Heb “lips.” The term “lips” functions as a metonymy of cause for what is said (or in this case taught).
[10:21] 2 tn The verb רָעָה (ra’ah) means “to feed” or “to shepherd” (e.g., Gen 48:15). What they say will meet the needs of many.
[10:21] 3 tn In what sense the fool “dies” is unclear. Fools ruin their lives and the lives of others by their lack of discipline and knowledge. The contrast is between enhancing life and ruining life.
[10:21] 4 tn Heb “heart.” The term לֵב (lev, “heart”) functions as a metonymy of association for wisdom and knowledge (BDB 524 s.v. 3.a).
[10:31] 5 tn Heb “the mouth.” The term פֶּה (peh, “mouth”) functions as a metonymy of cause for speech.
[10:31] 6 tn Heb “bears wisdom.” The verb נוּב (nuv) means “to bear fruit.” It is used figuratively of the righteous; they produce wisdom and righteousness. The term חָכְמָה (khokhmah, “wisdom”) represents the “fruit” that the righteous bear: “they bear the fruit of wisdom” (BDB 626 s.v.).
[10:31] 7 tn Heb “the tongue of perversions.” The noun תַּהְפֻּכוֹת (tahpukhot, “perversions”) functions as a genitive of content; it refers to what the tongue says – perverse things. The plural form depicts a plural of character. The term לָשׁוֹן (lashon, “tongue”) functions as a synecdoche of part (= tongue) for the whole person (= the speaker). The tongue is emphasized because this person is characterized by perverse speech. The term תַּהְפֻּכוֹת (“perversions”) refers to those who turn things upside down, overthrow, or pervert what is right.
[10:31] 8 tn Heb “will be cut off” (so NAB, NRSV, NLT); cf. KJV, NASB, NIV “cut out.” Their tongue will be cut off, a hyperbole meaning to bring to an end the evil that they speak.
(NT only) to listen to the NET Bible 
