Surah Ghafir — Ayah 12 (40:12)
ذَٰلِكُم بِأَنَّهُۥٓ إِذَا دُعِيَ ٱللَّهُ وَحۡدَهُۥ كَفَرۡتُمۡ وَإِن يُشۡرَكۡ بِهِۦ تُؤۡمِنُواْۚ فَٱلۡحُكۡمُ لِلَّهِ ٱلۡعَلِيِّ ٱلۡكَبِيرِ ١٢
English translation (Saheeh International)
[They will be told], "That is because, when Allāh was called upon alone, you disbelieved; but if others were associated with Him, you believed. So the judgement is with Allāh, the Most High, the Grand."
Brief commentary
That punishment which you are punished with is because when Allah was called upon and no partner was associated with Him, you disbelieved in Him and made partners for Him. And when partners were worshipped alongside Allah, you believed. So the judgment is with Allah alone, High with His essence, decree and domination, the Great.