Jamieson, Fausset, and Brown
Rejoice—not advice, but warning. So I Kings 22:15, is irony; if thou dost rejoice (carnally, Ecclesiastes 2:2; Ecclesiastes 7:2, not moderately, as in Ecclesiastes 5:18), etc., then "know that . . . God will bring thee into judgment" (Ecclesiastes 3:17; Ecclesiastes 12:14).
youth . . . youth—distinct Hebrew words, adolescence or boyhood (before Ecclesiastes 11:10), and full-grown youth. It marks the gradual progress in self-indulgence, to which the young especially are prone; they see the roses, but do not discover the thorns, until pierced by them. Religion will cost self-denial, but the want of it infinitely more (Luke 14:28).
Other Jamieson, Fausset, and Brown entries containing Ecclesiastes 11:9:
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