"Rejoice, young man, in your youth … but know that for all these things God will bring you into judgment" (11:9). How do the two halves of the verse go together?

The verse holds both halves, joined by but. It opens with commands: "Rejoice, young man, in your youth, and let your heart cheer you in the days of your youth, and walk in the ways of your heart, and in the sight of your eyes" (11:9) (tap Rejoice). Then, in the same verse: "but know that for all these things God will bring you into judgment" (11:9) (tap know, judgment). The next verse begins Therefore: "Therefore remove sorrow from your heart, and put away evil from your flesh; for youth and the dawn of life are vanity" (11:10). The next chapter goes on, "Remember also your Creator in the days of your youth, before the evil days come" (12:1). And the book's close speaks in the same words of every work: "For God will bring every work into judgment, with every hidden thing, whether it is good, or whether it is evil" (12:14). In Hebrew God will bring … into judgment is the same verb, God and the same noun in 11:9 and 12:14. The verses don't say which ways of the heart they mean, and these notes apply them to no one's own life or choices. They let the two halves of 11:9 stand side by side, as the verse sets them.