God is exalted among His people, and so they praise His name because He is holy, separate, sacred, and far removed from anything in heaven or on earth. And the actions that He does for his people in verse demonstrate our absolute need to praise God: He is just and His righteous reign brings upon equality. The rule of God is way better than anything mankind can bring. God’s established reign in Revelation reveal a life with God, no more tears, pain, sadness, worry, fears. It’s the ideal vision of a society and it’s only made possible with the perfect rule of Christ.