Ecclesiastes 6:12

For who knoweth what is good for man in this life, all the days of his vain life which he spendeth as a shadow? How can any mere human being, himself subject to change and decay, decide just what special condition of fortunes will be most beneficial to him? For who can tell a man what shall be after him under the sun? The future of every person's existence and fortunes is not in his own hands, but under the direction of God, to whom all believers will therefore entrust themselves, with all that they have, in childlike confidence.