Ecclesiastes 2:23
The description of labor producing only grief, and of sleepless nights filled with suffering, testifies to labor's spiritual and physical cost. The paradox deepens: labor aims at producing good, yet in doing so brings pain; the effort to secure the future exhausts the present. This verse suggests that the very structure of worldly striving—deferred gratification, endless effort, anxiety about outcomes—inherently produces suffering regardless of its success or failure.