Abstract: The aim of this dissertation is to investigate the concept of ‘wisdom’ in the Old Testament Wisdom Literature. This dissertation argues that the concept of ‘wisdom’ is both the search for order and the maintenance of mystery. The coexistence of order and mystery is suggested as a coherent theme of Wisdom Literature, and the various relationships between the two themes are explained as the particular voices in Wisdom Literature. Proverbs 16, Job 28, Ecclesiastes 3, and Sirach 24 exhibit the coexistent relationship between the two themes. While Proverbs 16 reveals an order prevailing coexistence, Ecclesiastes 3 exhibits a mystery prevailing coexistence. While Job 28 shows a dialogical coexistence, Sirach 24 illustrates a mysterious integrated coexistence between order and mystery.