NET
30 For we know the one who said, “Vengeance is mine, I will repay,” and again, “The Lord will judge his people.”
Darby
30 For we know him that said, To me [belongs] vengeance; *I* will recompense, saith the Lord: and again, The Lord shall judge his people.
KJV
30 For we know him that hath said, Vengeance [belongeth] unto me, I will recompense, saith the Lord. And again, The Lord shall judge his people.