12 For even man knoweth not his time; as fish that are taken hold of by an evil net, and as birds that are taken hold of by a snare, like these 'are' the sons of man snared at an evil time, when it falleth upon them suddenly.

Matthew Henry's Commentary on Ecclesiastes 9:12

Commentary on Ecclesiastes 9:11-12

(Read Ecclesiastes 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.