The world of the Gentiles (Nations) was not raised up for the sake of bringing forth the Messiah. Called out from Ur of the Chaldees,  Abram was given the promise that through his lineage the Messiah would come. Therefore a special nation was made from him. By word of promise Isaac was born to Abraham and Sarah in their old age. “In Isaac shall thy seed be called.”(Gen.21:12) For those Gentiles who believe, what a privilege it is to enter into blessings of that promise. “Wherefore remember, that ye being in time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands; That at that time ye were without Christ, being aliens from the commonwealth (polity/community) of Israel, and strangers from the covenants of promise, having no hope, and without God in the world: But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.”(Eph.2:11-13)