Which is a manifest token of the righteous judgment of God, that ye may be counted worthy of the kingdom of God, for which ye also suffer:
All this is evidence that God's judgment is right, and as a result you will be counted worthy of the kingdom of God, for which you are suffering.
ἔνδειγμα τῆς δικαίας κρίσεως τοῦ Θεοῦ, εἰς τὸ καταξιωθῆναι ὑμᾶς τῆς βασιλείας τοῦ Θεοῦ, ὑπὲρ ἧς καὶ πάσχετε·
endeigma tēs dikaias kriseōs toy Theoy, eis to kataxiōthēnai ymas tēs basileias toy Theoy, yper ēs kai paschete·