Surah Al-Baqarah, ayah 251

2:251

فَهَزَمُوهُم بِإِذۡنِ ٱللَّهِ وَقَتَلَ دَاوُۥدُ جَالُوتَ وَءَاتَىٰهُ ٱللَّهُ ٱلۡمُلۡكَ وَٱلۡحِكۡمَةَ وَعَلَّمَهُۥ مِمَّا يَشَآءُۗ وَلَوۡلَا دَفۡعُ ٱللَّهِ ٱلنَّاسَ بَعۡضَهُم بِبَعۡضٖ لَّفَسَدَتِ ٱلۡأَرۡضُ وَلَٰكِنَّ ٱللَّهَ ذُو فَضۡلٍ عَلَى ٱلۡعَٰلَمِينَ ٢٥١

Fahazamūhum bi idhnillāhi waqatala dāwūdu jālūta wa ātāhullāhul-mulka wal-hikmata wa'allamahū mimmā yashā'u walawlā daf'ullāhin-nāsa ba'dahum biba'dil lafasadatil-ardu walākinnallāha dhū fadlin 'alal-'ālamīn

So they defeated them by permission of Allāh, and David killed Goliath, and Allāh gave him the kingship and wisdom [i.e., prophethood] and taught him from that which He willed. And if it were not for Allāh checking [some] people by means of others, the earth would have been corrupted, but Allāh is the possessor of bounty for the worlds.