Revelation 15:4 (NIV)
Who will not fear you, O Lord, and bring glory to your name? For you alone are holy. All nations will come and worship before you, for your righteous acts have been revealed."
There are many who do not fear God now. There is coming a day however when God is revealed in an awesome display of power and might. This chapter of Revelation speaks of the end of God's wrath and here in this verse we see that even God's wrath is a righteous act. It is easy to go through life and not be aware of God's omnipresent nature. The book of Revelation is all about a clear revealing of God. Many atheists complain that if there were a God, then why doesn't he show himself. From what I can tell however, such an appearance would be too much for unrighteous beings to withstand. God alone is holy and righteous. Of course, when I speak of the revealing of God, I mean the revealing of Jesus Christ who came the first time as a servant laying down his own life for us. He is revealed in his second coming as mighty king exercising judgment. The first time only a few recognized him and believed him. The second time everyone will believe because there will be no doubt.
Romans 14:11 (NKJV)
For it is written: "As I live, says the Lord, Every knee shall bow to Me, And every tongue shall confess to God."