What is the Righteous Judgment of God?

It begins with “Payback” for one only receives the evil which one has done toward others.

“This is evidence of the righteous judgment of God, that you may be considered worthy of the kingdom of God, for which you are also suffering; since indeed God considers it just to repay with affliction those who afflict you, and to grant relief to you who are afflicted as well as to us, when the Lord Jesus is revealed from heaven with His mighty angels in flaming fire, inflicting vengeance on those who do not know God and on those who do not obey the gospel of our Lord Jesus.” (Thessalonians 1:5-8)