Surah Ibrahim 14:7

وَإِذْ تَأَذَّنَ رَبُّكُمْ لَئِن شَكَرْتُمْ لَأَزِيدَنَّكُمْ ۖ وَلَئِن كَفَرْتُمْ إِنَّ عَذَابِى لَشَدِيدٌ

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.'"

Translation: Saheeh International

Tafsir

And when your Lord proclaimed when He made it known that “If you are thankful for My graces through affirmation of My Oneness and obedience to Me then assuredly I shall give you more; …

Excerpt from Tafsir al-Jalalayn, commentary on 14:7, via Quran.com. The reader has the full commentary and 9 more tafsirs.