Surah Ar-Ra'd (The Thunder), Verse 27

وَیَقُوْلُ الَّذِیْنَ كَفَرُوْا لَوْلَاۤ اُنْزِلَ عَلَیْهِ اٰیَةٌ مِّنْ رَّبِّهٖ قُلْ اِنَّ اللّٰهَ یُضِلُّ مَنْ یَّشَآءُ وَیَهْدِیْۤ اِلَیْهِ مَنْ اَنَابَ ۟

Wa yaqoolul lazeena kafaroo law laaa unzila 'alaihi Aayatum mir Rabbih; qul innal laaha yudillu mai yashaa'u wa yahdeee ilaihi man anaab

“The Unbelievers say: "Why is not a sign sent down to him from his Lord?" Say: "Truly Allah leaveth, to stray, whom He will; But He guideth to Himself those who turn to Him in penitence,-”

Quran 13:27 (Yusuf Ali Translation)