John saw those who had been victorious over the beast respond to God’s judgment of rebellious people on earth by singing praise to God for his mighty deliverance and righteous judgment.

Revelation 15:2-4

2 I saw what looked like an ocean that was made of glass and mixed with fire. And I saw the people who overcame the beast by not worshipping it or its image, or allowing its agent to mark them with the number that corresponds to the beast’s name [PRS]. They were standing by the ocean that looked like it was made of glass. They had harps for praising God. 3 They were singing a song like God’s servant Moses sang long ago. They sang like this to praise Jesus, the one who is like a lamb:

Lord God Almighty,

whatever you do is powerful and marvelous!

You always act righteously and truthfully.

You are king forever!

4 O Lord, you alone are holy!

People of [MTY] all nations will come and worship you,

because you show everyone that you have judged everyone righteously.

So, everyone will fear you and honor you! [RHQ].