Additionally, your Lord has decreed that He will raise up against them people who will inflict severe persecution upon them, until the Day of Resurrection. Your Lord is most efficient in enforcing retribution, and He is certainly the Forgiver, Most Merciful.
وَإِذ تَأَذَّنَ رَبُّكَ لَيَبعَثَنَّ عَلَيهِم إِلىٰ يَومِ القِيٰمَةِ مَن يَسومُهُم سوءَ العَذابِ إِنَّ رَبَّكَ لَسَريعُ العِقابِ وَإِنَّهُ لَغَفورٌ رَحيمٌ
wa iz ta azzana Rabbuka la yab’asannna ‘alaihim ilaa Yawmil Qiyaamati mai yasoomuhum sooo’al ‘azaab; inna Rabbaka lasaree’ul ‘iqaabi wa innahoo la Ghafoorur Raheem