And [remember] when your Lord proclaimed, 'If you are grateful, I will surely increase you [in favor]; but if you deny, indeed, My punishment is severe.'"
لَأَزِيدَنَّكُمۡۖsurely I will increase youla-azīdannakum
وَلَئِنbut ifwala-in
كَفَرۡتُمۡyou are ungratefulkafartum
إِنَّindeedinna
عَذَابِيMy punishmentʿadhābī
لَشَدِيدٞ(is) surely severelashadīdun
Tafsir
Moses said to them: Remember when your Lord clearly announced to you: If you are grateful to Allah for the above-mentioned favours that He has blessed you with, then He will give you more from His favour and grace. But, if you deny His favours to you and do not show gratitude for them, His punishment is severe for those who deny His favours and are not grateful for them.