Parallel
2 Thessalonians 1:6
Patriarchal Greek New Testament (1904) · Berean Standard Bible
εἴπερ δίκαιον παρὰ Θεῷ ἀνταποδοῦναι τοῖς θλίβουσιν ὑμᾶς θλῖψιν
After all, it is only right for God to repay with affliction those who afflict you,