The Bible talks about certain major events that will affect the entire universe. Specifically, Scripture tells us about the second coming of Jesus, a great tribulation, a millennium period, a final judgment, eternal punishment for unbelievers and eternal rewards for believers who will live with God in the new heaven and earth.
Whenever you are reading what the Bible says about future things, trying to understand how these future things the Bible talks about will play out, there’s inevitably a lack of clarity and some confusion that comes with any discussion of future things. Of course, there will be greater clarity as all these future things unfold, like when the prophecies about the first coming came to fulfillment.