Weakness of faith without sincere hearts

۞ وَلَقَدْ جَآءَكُم مُّوسَىٰ بِٱلْبَيِّنَـٰتِ ثُمَّ ٱتَّخَذْتُمُ ٱلْعِجْلَ مِنۢ بَعْدِهِۦ وَأَنتُمْ ظَـٰلِمُونَ

And Moses had certainly brought you clear proofs. Then you took the calf [in worship] after that, while you were wrongdoers.