“The nations were filled with wrath, but now the time of your wrath has come. It is time to judge the dead and reward your servants the prophets, as well as your holy people, and all who fear your name, from the least to the greatest. It is time to destroy all who have caused destruction on the earth.” Revelation 11:18
At Jesus’ 1st coming He did not come to judge man. “I will not judge those who hear me but don’t obey me, for I have come to save the world and not to judge it. (John 12:47) but He came that we might have salvation. When Jesus returns the 2nd time, He is coming to judge, because the Father has given all judgment to Him. “In addition, the Father judges no one. Instead, he has given the Son absolute authority to judge. (John 5:22). He is going to represent the Holiness, authority and power of Almighty God. “But God shows his anger from heaven against all sinful, wicked people who suppress the truth by their wickedness. They know the truth about God because he has made it obvious to them. For ever since the world was created, people have seen the earth and sky. Through everything God made, they can clearly see his invisible qualities—his eternal power and divine nature. So they have no excuse for not knowing God.” (Romans 1:18-20) It doesn’t matter if you believe there is a God or not, one day you will face judgement.
Then people were filled with wrath, in other words they were angry at God for sending His judgment even if he has been telling them since the beginning of time that there will be a judgment. The wrath of men is impotent; the wrath of God is omnipotent. The wrath of men is wicked; the wrath of God is holy. That which was anticipated in Revelation 6:16-17 is here being fulfilled. In Revelation we see God fulfilling His promise, the promise of Judgment. This is the transition from the king of the world to the kingdom of God.