Final answer:
The promise to gather and restore Israel after their exile/scattering can be found in the book of Isaiah, chapter 11.
Step-by-step explanation:
The promise to gather and restore Israel after their exile/scattering can be found in the Bible, specifically in the book of Isaiah, chapter 11. This chapter is often referred to as the "Prophecy of the Branch" or the "Messiah's Coming Kingdom." It describes a future time when a descendant of David, known as the Branch, will gather the dispersed people of Israel and establish a peaceful kingdom.