Ecclesiastes 6:7
Context6:7 All of man’s labor is for nothing more than 1 to fill his stomach 2 –
yet his appetite 3 is never satisfied!
Ecclesiastes 8:2
Context8:2 Obey the king’s command, 4
because you took 5 an oath before God 6 to be loyal to him. 7
Ecclesiastes 10:12
Context

[6:7] 1 tn The phrase “for nothing more than” does not appear in the Hebrew text, but is supplied in the translation for clarity.
[6:7] 2 tn Heb “All man’s work is for his mouth.” The term “mouth” functions as a synecdoche of part (i.e., mouth) for the whole (i.e., person), substituting the organ of consumption for the person’s action of consumption (see E. W. Bullinger, Figures of Speech, 641-43), as suggested by the parallelism with נֶפֶשׁ (nefesh, “his appetite”).
[6:7] 3 tn The term נֶפֶשׁ (nefesh, “desire; appetite”) is used as a metonymy of association, that is, the soul is associated with man’s desires and appetites (BDB 660 s.v. נֶפֶשׁ 5.c; 6.a).
[8:2] 4 tc The Leningrad Codex (the basis of BHS) reads אֲנִי (’ani, 1st person common singular independent personal pronoun): “I obey the king’s command.” Other medieval Hebrew
[8:2] 5 tn The phrase “you took” does not appear in the Hebrew text, but is supplied in the translation for smoothness.
[8:2] 6 tn The genitive-construct שְׁבוּעַת אֱלֹהִים (shÿvu’at ’elohim, “an oath of God”) functions as a genitive of location (“an oath before God”) or an adjectival genitive of attribute (“a supreme oath”).
[8:2] 7 tn The words “to be loyal to him” do not appear in the Hebrew text, but are supplied in the translation for clarification.
[10:12] 7 tn Heb “of a wise man’s mouth.”
[10:12] 8 tn The phrase “win him” does not appear in the Hebrew text, but has been supplied in the translation for clarity.
[10:12] 9 tn Or “are gracious.” The antithetical parallelism suggests that חֵן (khen) does not denote “gracious character” but “[gain] favor” (e.g., Gen 39:21; Exod 3:21; 11:3; 12:36; Prov 3:4, 34; 13:15; 22:1; 28:23; Eccl 9:11); cf. HALOT 332 s.v. חֵן 2; BDB 336 s.v. חֵן 2. The LXX, on the other hand, rendered חֶן with χάρις (caris, “gracious”). The English versions are divided: “are gracious” (KJV, YLT, ASV, NASB, NIV) and “win him favor” (NEB, RSV, NRSV, NAB, MLB, NJPS, Moffatt).
[10:12] 11 tn Heb “consume him”; or “engulf him.” The verb I בלע (“to swallow”) creates a striking wordplay on the homonymic root II בלע (“to speak eloquently”; HALOT 134-35 s.v בלע). Rather than speaking eloquently (II בלע, “to speak eloquently”), the fool utters words that are self-destructive (I בלע, “to swallow, engulf”).