‘Eschatology’ is the study of end-time-events. Since God does not exist in TIME, these events are already settled in heaven.

For example: Scripture gives us the outcome of the battle of Armageddon before it’s even fought!

”These shall make war with the Lamb (Jesus), and the Lamb shall overcome them: for He is Lord of Lords, and King of Kings: and they that are with Him are ‘called’, and ‘chosen’, and ‘faithful’.” – Revelation 17:14