Al-A'raf 7:167

Wa-ith taaththana rabbukalayabAAathanna AAalayhim ila yawmi alqiyamati manyasoomuhum soo-a alAAathabi inna rabbaka lasareeAAu alAAiqabiwa-innahu laghafoorun raheem

And [mention] when your Lord declared that He would surely [continue to] send upon them until the Day of Resurrection those who would afflict them with the worst torment. Indeed, your Lord is swift in penalty; but indeed, He is Forgiving and Merciful.

Recall) when your Lord declared that He would surely keep sending, till the Day of Judgment, those who inflict on them evil chastisement. Certainly, your Lord is swift in punishing, and certainly He is the Most-forgiving, Very Merciful.