Romans 9:5-11

To them belong the patriarchs, and from them, according to His natural descent, came the Christ (the Messiah, the Anointed), He who is exalted and supreme over all, God blessed forever. Amen. However, it is not as though God’s word has failed [coming to nothing]. For not all who are descended from Israel (Jacob) are [the true] Israel; and they are not all the children of Abraham because they are his descendants [by blood], but [the promise was]: “YOUR DESCENDANTS WILL BE NAMED THROUGH ISAAC” [though Abraham had other sons]. [Gen 21:9-12] That is, it is not the children of the body [Abraham’s natural descendants] who are God’s children, but it is the children of the promise who are counted as [Abraham’s true] descendants. For this is what the promise said: “ABOUT THIS TIME [next year] I WILL COME, AND SARAH SHALL HAVE A SON.” [Gen 18:10] And not only that, but this too: Rebekah conceived twin sons by one man [under the same circumstances], by our father Isaac; and though the twins were not yet born and had not done anything either good or bad, so that God’s purpose [His choice, His election] would stand, not because of works [done by either child], but because of [the plan of] Him who calls them