11/23/2025 What is the Purpose of the Millennium? From Got Questions.com--The millennium (also known as the millennial kingdom) is the 1,000-year reign of Jesus after the tribulation and before the Great White Throne Judgment of the wicked. During the millennium, Jesus will reign as king over Israel and all the nations of the world (Isaiah 2:4; 42:1). The world will live in peace (Isaiah 11:6–9; 32:18), Satan will be bound (Revelation 20:1–3), and, at the beginning, everyone will worship God (Isaiah 2:2–3). The purpose of the 1,000-year reign is to fulfill various promises God made to the world. Some of these promises, called covenants, were given specifically to Israel. Others were given to Jesus, the nations of the world, and creation. Jesus’ 1,000-year reign will be a time of promises kept.