الآية رقم (57) - وَأَمَّا الَّذِينَ آمَنُوا وَعَمِلُواْ الصَّالِحَاتِ فَيُوَفِّيهِمْ أُجُورَهُمْ وَاللّهُ لاَ يُحِبُّ الظَّالِمِينَ

(57) - (But as for those who believed and did righteous deeds, He will give them in full their rewards, and Allah does not like the wrongdoers.)

All the Quranic verses about belief mentions it along with the good-doing because faith is based on what you believe in within the heart and is proved by your deeds. 

( وَاللَّهُ لَا يُحِبُّ الظَّالِمِينَ ) (…and Allah does not like the wrongdoers): The Almighty likes or hates somebody based on their deeds not their persons. Thus, the Almighty doesn’t like the one who does wrong to himself or others as stated in the Holy Quran:

 {وَأَن لَّيْسَ لِلْإِنسَانِ إِلَّا مَا سَعَىٰ * وَأَنَّ سَعْيَهُ سَوْفَ يُرَىٰ *  ثُمَّ يُجْزَاهُ الْجَزَاءَ الْأَوْفَىٰ}

(And that there is not for man except that [good] for which he strives % And that his effort is going to be seen – % Then he will be recompensed for it with the fullest recompense.) (An-Najm: 39-41)

In all, Islam is not only about slogans and mere rituals but also the righteous deeds.