They are speaking a common world language. It is likely mankind’s original language, which everybody on earth spoke for the first 1,800 years of human existence ​ — from Adam’s creation in 4026 B.C.E. until Peleg’s day (2269 to 2030 B.C.E.), for “in his days the earth [that is, earth’s population] was divided. ”
२२६९ से २०३० तक), इसलिए कि “उसके दिनों में पृथ्वी [यानी, पृथ्वी की जनसंख्या] बंट गयी । ”