God promised that through Abraham and his descendants, all families of the earth ​ — not just one nation — ​ were to be blessed.
وَعَدَ ٱللهُ إِبْرَاهِيمَ أَنَّهُ بِنَسْلِهِ تَتَبَارَكُ جَمِيعُ أُمَمِ ٱلْأَرْضِ ،‏ لَا أُمَّةٌ وَاحِدَةٌ فَقَطْ .‏ ‏