In this passage we not only see a river of life and the tree of life but we are told in verse 4 that we shall see His face. Think about that -we will see the very face of God Himself. Remember now Moses was not permitted to see His face and in John 1-18 it says no one has ever seen Him. However, this passage says that the day is coming when we will indeed see Him face to face. Again in Matthew 5-8 --we will see God-