Parallel
Ecclesiastes 2:19
Rahlfs Septuagint (1935) · Berean Standard Bible
καὶ τίς οἶδεν εἰ σοφὸς ἔσται ἢ ἄφρων καὶ ἐξουσιάζεται ἐν παντὶ μόχθῳ μου ᾧ ἐμόχθησα καὶ ᾧ ἐσοφισάμην ὑπὸ τὸν ἥλιον καί γε τοῦτο ματαιότης
And who knows whether that man will be wise or foolish? Yet he will take over all the labor at which I have worked skillfully under the sun. This too is futile.