Surah An-Nahl 16:22

إِلَـٰهُكُمْ إِلَـٰهٌ وَٰحِدٌ ۚ فَٱلَّذِينَ لَا يُؤْمِنُونَ بِٱلْـَٔاخِرَةِ قُلُوبُهُم مُّنكِرَةٌ وَهُم مُّسْتَكْبِرُونَ

Your god is one God. But those who do not believe in the Hereafter - their hearts are disapproving, and they are arrogant.

Translation: Saheeh International

Tafsir

Your God the One deserving of your worship is One God without any equal in terms of His essence or His attributes and this is God exalted He be. But as for those who do not believe in the Hereafter their hearts are in denial rejecting the Oneness of God and they are arrogant scorning to believe in it.

Excerpt from Tafsir al-Jalalayn, commentary on 16:22, via Quran.com. The reader has the full commentary and 9 more tafsirs.