Monotheism (Tawhīd) and the rejection of shirk

وَقَالَتِ ٱلْيَهُودُ عُزَيْرٌ ٱبْنُ ٱللَّهِ وَقَالَتِ ٱلنَّصَـٰرَى ٱلْمَسِيحُ ٱبْنُ ٱللَّهِ ۖ ذَٰلِكَ قَوْلُهُم بِأَفْوَٰهِهِمْ ۖ يُضَـٰهِـُٔونَ قَوْلَ ٱلَّذِينَ كَفَرُوا۟ مِن قَبْلُ ۚ قَـٰتَلَهُمُ ٱللَّهُ ۚ أَنَّىٰ يُؤْفَكُونَ

The Jews say, "Ezra is the son of Allāh"; and the Christians say, "The Messiah is the son of Allāh." That is their statement from their mouths; they imitate the saying of those who disbelieved before [them]. May Allāh destroy them; how are they deluded?