Revelation 5:10

10 And You have made them a kingdom (royal race) and priests to our God, and they shall reign [as kings] over the earth!

The elders testify and they sing praises that those who will be chosen by God become one with Him as leaders. They proclaim that as Jesus is, so are we on the earth, 1 John 4:17. In Revelation 1:6, Jesus tells John to tell us that through Him, we are now Kings and Priests to God. And here John is hearing the twenty-four elders, and He knows them specifically as elders, are proclaiming that we are Kings and Priests. John is hearing the elders of Heaven proclaim that we reign on the earth. How cool is this? Think of John being up there in the presence of all of these things and hearing Jesus, the elders, and the angels all saying that we are Kings and Priests, just like Jesus is! Wow! Also, ask yourself why is John being told these glorious thing before He is shown the great Tribulation? Just another Truth that there is no pre-tribulation rapture! 

The Truth that sets us free is some great stuff! Through Christ we are now more than conquerors, Romans 8:37. We have been raised up together, and we now sit together with our Lord in Heavenly places, Ephesians 2:6. Jesus is far greater within us than anything that is in the world, 1 John 4:4. And as Jesus is, so are we now in this world, 1 John 4:17. Today is the day of our salvation, and now is our appointed time, 2 Corinthians 6:2. We are Kings and we are Priests, because we are one with the King. We have the whole armor of our Father just as Jesus has it, and whatsoever thing that we are led to bind by our Head is bound, and whatsoever thing we loose, is loosed, Matthew 16:19. We are empowered and led to forgive sins and they are forgiven. And we have the very Spirit of our Father teaching and plainly showing us all things to come, we have the mind of Christ, 1 Corinthians 2:16. This is our salvation and the elders of our Father sing praises about the Truth of who we now are in Christ! And our Savior needed show us who we are in Him and Who He is in us before He showed us the events of the end of the world.