Final answer:
The Urim and Thummim are used for decision-making and interpreting divine will in biblical texts, and are to be constructed as instructed to Moses. Moreover, 'Urim' refers to the ancient city of Ur in Sumerian literature, which faced destruction credited to the gods.
Step-by-step explanation:
The Urim and Thummim serve a religious and mystical purpose related to decision-making and discernment of the divine will in biblical contexts. According to scripture, such as Hebrews 8:5, they are part of the sacred priestly garments and were utilized to obtain guidance from God, especially by the high priest during ancient times.
The passage suggests that they should be made according to the celestial pattern shown to Moses on the mountain.
In a broader historical and literary sense, the term "Urim" is also seen in Sumerian literature, as in The Lament for Urim, where it refers to an ancient city known as Ur that suffered destruction due to the actions of divine beings.
The lament portrays the city's demise as a result of the whims of gods, with the conquerors being mere instruments of their will.