The Book of Ecclesiastes, attributed to Qoheleth ('the Teacher'), presents a unique perspective on the meaning of life, often characterized by skepticism and a focus on the transient nature of existence ('vanity of vanities, all is vanity,' Ecclesiastes 1:2). How does Qoheleth's philosophical exploration challenge or complement the traditional wisdom literature found elsewhere in the Old Testament, particularly in relation to the concepts of divine retribution and the inherent value of human endeavor?