Final answer:
Isaiah 55 communalizes the royal office by extending the promises made to David's lineage to the entire community of Israel, especially during the time of exile.
Step-by-step explanation:
Isaiah 55 is often interpreted as a text that communalizes the royal office by extending the promises made to David and his lineage to the entire community of believers.
This approach to the text emerged during the time of the exile in Babylon, when much of the Judahite society was displaced and the monarchy disrupted.
Individuals like Isaiah and other prophets played a pivotal role in re-interpreting the Davidic Covenant as one that encompasses not only the physical king but also the people of Israel as participants in God's promises.
The royal motifs found in Isaiah range from instructions and blessings to the ruler to responsibilities and standards that the king should maintain.