Chapter 57 Sign 8

وَمَا لَكُمۡ لَا تُؤۡمِنُونَ بِٱللَّهِ وَٱلرَّسُولُ يَدۡعُوكُمۡ لِتُؤۡمِنُواْ بِرَبِّكُمۡ وَقَدۡ أَخَذَ مِيثَٰقَكُمۡ إِن كُنتُم مُّؤۡمِنِينَ٨

And what to you, not you believe with the God? And the Messengers, they call you to your believing with your Lord and have taken your promise if you be believers.