Final answer:
Bullock suggests the Book of Proverbs functions to guide ethical behavior and convey truth through metaphorical sayings, helping to navigate social roles and personal virtues.
Step-by-step explanation:
Bullock, in discussing the purpose of the Book of Proverbs, highlights the essence of wisdom literature in guiding ethical and moral behavior. Proverbs are often metaphorical and require the listener to deduce their meanings, as in the example where a speaker compares prominent roles within a ceremonial gathering to parts of the mouth, with the more central role akin to a tongue and the supportive role compared to teeth. This metaphor reflects the overall function of Proverbs: to convey deep truths and life lessons through pithy sayings. In looking at such wisdom texts, whether discussing the practical life advice for a king, the reflection on virtues, or the moral guidance offered by various wise sayings, Bullock might argue that Proverbs serve the function of fostering understanding and guiding behavior towards truth, justice, and goodness.