Al-Ma'idah' - 5:84

وَمَا لَنَا لاَ نُؤْمِنُ بِاللّهِ وَمَا جَاءنَا مِنَ الْحَقِّ وَنَطْمَعُ أَن يُدْخِلَنَا رَبَّنَا مَعَ الْقَوْمِ الصَّالِحِينَ
[5:84]
And what (reason) have we that we should not believe in Allah and in the truth that has come to us, while we earnestly desire that our Lord should cause us to enter with the good people?
"What cause can we have not to believe in Allah and the truth which has come to us, seeing that we long for our Lord to admit us to the company of the righteous?"
How should we not believe in Allah and that which hath come unto us of the Truth. And (how should we not) hope that our Lord will bring us in along with righteous folk?