Commentaries
9:11,12 Men's success seldom equals their expectations. We must use means, but not trust to them: if we succeed, we must give God the praise; if crossed, we must submit to his will. Those who put off the great concerns of their souls, are caught in Satan's net, which he baits with some worldly object, for which they reject or neglect the gospel, and go on in sin till they suddenly fall into destruction.
11. This verse qualifies the sentiment, Ec 9:7-9. Earthly "enjoyments," however lawful in their place (Ec 3:1), are to give way when any work to be done for God requires it. Reverting to the sentiment (Ec 8:17), we ought, therefore, not only to work God's work "with might" (Ec 9:10), but also with the feeling that the event is wholly "in God's hand" (Ec 9:1).
race … not to the swift—(2Sa 18:23); spiritually (Zep 3:19; Ro 9:16).
nor … battle to … strong—(1Sa 17:47; 2Ch 14:9, 11, 15; Ps 33:16).
bread—livelihood.
favour—of the great.
chance—seemingly, really Providence. But as man cannot "find it out" (Ec 3:11), he needs "with all might" to use opportunities. Duties are ours; events, God's.