Its a metaphor I used to describe the religion Islam.
Where did it come from?
Instead of greeting each other with Hi or hello, taking into consideration that islam contains many nationalities, there is one form of greeting and we say it like this: Assalam Alukum Wa rahmat Allah wa barakatuh ; this translates to May Peace Be Upon you.
&thats how, Islam, for me, is the language of peace (: