Isaiah 66:6
4 So I will choose severe punishment for them; I will bring on them what they dread because I called, and no one responded. I spoke and they did not listen. They did evil before me; they chose to do what displeases me.” 5 Listen to the Lord’s message, you who respect his word! “Your countrymen, who hate you and exclude you, supposedly for the sake of my name, say, ‘May the Lord be glorified, then we will witness your joy.’ But they will be put to shame. 6 The sound of battle comes from the city; the sound comes from the temple! It is the sound of the Lord paying back his enemies. 7 Before she goes into labor, she gives birth! Before her contractions begin, she delivers a boy!
2 Thessalonians 1:6
5 This is evidence of God’s righteous judgment, to make you worthy of the kingdom of God, for which in fact you are suffering. 6 For it is right for God to repay with affliction those who afflict you, 7 and to you who are being afflicted to give rest together with us when the Lord Jesus is revealed from heaven with his mighty angels. 8 With flaming fire he will mete out punishment on those who do not know God and do not obey the gospel of our Lord Jesus. 9 They will undergo the penalty of eternal destruction, away from the presence of the Lord and from the glory of his strength, 10 when he comes to be glorified among his saints and admired on that day among all who have believed—and you did in fact believe our testimony.
Notes and References
"... With the help of a rare verb the text strongly expresses the idea that the final judgment has to do with 'reward.' The text thus clearly understands the final judgement in terms of a 'justice of reward,' comparable to what we find in texts like the Greek/Ethiopic Revelation of Peter or the descriptions of hell in the Apocalypse of Ezra, the Visions of Ezra and others. The use, however, of [the rare verb] can be seen as an indicator that our text possibly refers to some Old Testament passages here. The best possible candidate is Isa 66:6, a part of Isaiah's final vision of the end of time ..."
Nicklas, Tobias Intertextuality—Christology—Pseudepigraphy: The Impact of Old Testament Allusions in 2 Thess 1:5–12 (pp. 227-238) Brill, 2013