Isaiah 40 has no superscription such as those that open prophetic books. While 40:1 is the beginning of a new synagogue lection and opens a new section in the MT, 1QIsa, and 4QIsb, chapter 40 introduces motifs that make links with previous material in the book. The opening references to Jerusalem-Zion constitute an important example, for the present and future of Jerusalem-Zion in its chosenness, wickedness, danger, and security are a theme of great prominence in Isaiah 1–39.