The described in Revelation is a bride to the temple that is found in its midst which indicates that this city is not just about great architecture but great relationships. God will finally dwell and be in perfect harmony with his people thanks to the Lamb
The millennium relates to the period of time in which the gospel is preached to the nations under the guidence and protection of Jesus who lockes up the strong man to prevent him from deceiving the nations form whom the elect will be saved.
The fact that we will all die aught to make us aware of our desperate need to be redeemed by the one who gave us life in the first place. Admit to the thing that causes you to die and your on your way to redemption