How did Hippolytus use biblical chronology to postpone expectations of the End?

To address the rise of irresponsible apocalypticism in his time, Hippolytus of Rome utilized a chronological framework to postpone expectations of the End. He grounded his argument in the concept of the sabbatical millennium, which posited that the world would labor for 6,000 years—based on the six days of creation in Genesis and the belief that 1,000 years equals one day in God's sight—before entering a 1,000-year period of rest.12

By calculating the date of Jesus’ Incarnation to the year 5500 anno mundi (am), Hippolytus was able to argue around 5700 am (approximately 200 CE) that the world still had roughly 300 years remaining before the Parousia. This chronological approach served as a "top-down" method to calm the anxieties of the faithful and counter the radical, immediate expectations of groups like the Montanists, effectively pushing the anticipated End further into the future.12