Taqwa

O mankind! We have created you from a male and a female, and made you into nations and tribes, that you may know one another. Verily, the most honourable of you with Allâh is that (believer) who has At-taqwa [i.e. he is one of the Muttaqûn (pious - see V.2:2). Verily, Allâh is All-Knowing, All-Aware.
 
 
Al-Hujraat [49:13]