The sermon walks through Ecclesiastes to show that life “under the sun” is disorienting—our work, wealth, pleasure, and even wisdom are like vapor—yet God calls us to receive our ordinary, present lives as gifts rather than chase ultimate meaning in achievement. It then lifts our eyes above the sun to Jesus, the greater Teacher who enters our futility, bears its full absurdity at the cross, and secures a coming new creation, so that in Him our labor is no longer in vain and we can live with resilient joy now.