They — He speaks of the same person; only the singular number is changed into the plural, possibly to intimate, that altho' for the present only some wicked men were punished, yet then all of them should suffer. Brought — As malefactors are brought forth from prison to execution.
Related Commentaries of Job 21:30
Job 21:30
30 That the wicked is reserved to the day of destruction? they shall be brought forth to the day of wrath.h