Millennialism

 (from Latin mille 'thousand', annus 'year', and -ism) or chiliasm (from the Greek equivalent) is a belief which is advanced by some religious denominations. According to this belief, a Golden Age will occur or a Paradise will be established on Earth prior to the Last Judgment and the future eternal state of the "world to come".

Quotes

 * American scholar Catherine Wessinger distinguishes between “catastrophic” and “progressive” forms of millennialism. While catastrophic millennialism waits for a final disaster that would end the world as we know it, progressive millennialism examines the signs of the times and expects a great transformation that will not necessarily be the end of everything. Also, progressive millennialism does not believe that the transformation will be the simple consequence of cosmic forces humans cannot control. We have a role to play in preparing it.
 * Massimo Introvigne and Karolina Maria Kotkowska, "The Ahmadi Religion of Peace and Light. 3. Esotericism and Progressive Millennialism", Bitter Winter (April 6, 2024)