On the Eternal side

  Then He who sat on the throne said, Behold, I make all things new. And he said to me, Write, for these words are true and faithful. Revelation 21:5
  What does the Lord mean when he says, I will make all things new? Let's approach this question first from this side of eternity. When you come to know God, you will find that two things will happen almost immediately. The first, simply put, is that you'll become wiser. Because you have awoken your spiritual self, you'll have a better understanding of things, because you'll have a spiritual perspective.
In short, you'll be smarter. Smarter, in that, you'll begin to see the truth in all things, even though the truth may be hidden in a bed of lies. So then, what's new on this side of life? You'll be smarter, your IQ will go up. And you'll have to trust me on this, because I know of no scientific study on the IQ of spiritual people vs. the unspiritual.
  On the eternal side,
    Things will be new, all things, because the Kingdom of Heaven is like no other place ever. The Lord has said, There will be a new heaven and a new earth. But how can we grasp the understanding of what Heaven will be like? The first great blessing from the spiritual side of things, is that, by it, eternal life is guaranteed you. Listen, life and death share on characteristic, and that is that they are both eternal. Eternal life and eternal death are two sides of the same coin, as time is eternal, and no one escapes time. God, being all things, is time, as eon after eon, time rolls on, time is eternal, God is eternal.
  But here's the truly amazing part, God is greater then time, because God is outside of time. He was, before it was first recorded, and he will be there when it ends. For what does God say about himself? It is done! I am the Alpha and the Omega, the Beginning and the End. I will give the fountain of the water of life freely to him who thirsts.  Rev. 21:6