Romans 9 - Clarification 2

 6 It is not as though God's word had failed. For not all who are descended from Israel are Israel. 7 Nor because they are his descendants are they all Abraham's children. On the contrary, "It is through Isaac that your offspring will be reckoned." 8 In other words, it is not the natural children who are God's children, but it is the children of the promise who are regarded as Abraham's offspring. 9 For this was how the promise was stated: "At the appointed time I will return, and Sarah will have a son." 10 Not only that, but Rebekah's children had one and the same father, our father Isaac. 11 Yet, before the twins were born or had done anything good or bad--in order that God's purpose in election might stand: 12 not by works but by him who calls--she was told, "The older will serve the younger." 13 Just as it is written: "Jacob I loved, but Esau I hated."  Romans 9
 Thus not everyone who is a descendent of Israel (Jacob) is an Israelite.There is an Israel according to the promise of the Gospel of God. There is an Israel according to the flesh.
 "For not all those out of Israel (the literal Jewish nation), these are Israel (the spiritual Israel)." This startling paradox is not a new idea with Paul. He had already shown ( Galatians 3:7-9 ) that those of faith are the true sons of Abraham. He has amplified that idea also in Romans 4:1 ff. So he is not making a clever dodge here to escape a difficulty. He now shows how this was the original purpose of God to include only those who believed. - Robertson's Word pictures of the New testament.  
In refutation of the Jewish claim that the natural descendents of Israel are all Israel , Paul says that there is a Spiritual Israel , the Church and a national Israel.

What is the purpose of God in electing Abraham ? How was the promise that abraham will be a blessing to all families of the earth , get fulfilled? 
     The purpose of electing Abraham , Isaac , Jacob and his descendents and making them into a nation was so that Christ could come into the world , in the form of a man , the 'seed of abraham' , as one of the descendent of the Patriarchs and atone for the sins of the whole world. Israel was chosen for the sake of Christ. The old testament is the history of the forefathers of Christ. The purpose of God preserving Israel as a people  and keeping a remnant was so that Christ would be born still as a descended of the friend of God Abraham , inspite of the rebellion and obstinancy of Israel. God chose a remnant , to preserve Israel from extinction.Why was Israel preserved ? Why did'nt God let them become extinct? It was for the sake of Christ. It was for the sake of the promise given to the partriarchs. 

What is the purpose in choosing Isaac? Again , promise of Christ being born as his descendent. God chose Isaac and not Ismael to be the forefather of the nation of Israel, forefather of Christ . That's his wish.It is not about choosing Isaac above Ismael for salvation.

What was the purpose of God choosing Jacob over Esau? God chose Jacob over Esau , in his sovereignity to be the father of the nation of Israel , to be the forefather of Jesus. When God  announced the birth of the Children to Rebecca , 
 The LORD said to her, "Two nations are in your womb, and two peoples from within you will be separated; one people will be stronger than the other, and the older will serve the younger." Genesis 25:23

So when Paul talks about Jacob and Esau , he is actually referring to this verse, where Jacob and Esau are representatives of two nations Israel and Edom which the readers of Epistle were familiar with . Again it is not about choosing Jacob to be saved and Esau to be damned to hell. Paul never says anything in that line. 
Moreover Esau never served Jacob , whereas the Edomites the descendents of Esau were served Israel under David and Solomon too.
 Edom was periodically subjected to Judea [under David & Solomon (10th c. BCE) & the Maccabees (2nd c. BCE)].
   -----     virtualreligion.net/iho/idumea.html

So in the light of these biblical and extra-biblical evidences it can be safely concluded that God did not choose the person of  Jacob for Salvation and the person of Esau for damnation. It is about the lineage of Christ. In whose lineage would Christ come? God chose to be born as a descendent of Jacob and not Esau. 

Did God hate Esau? 

The word hate denotes non preference of the Esau for this purpose. As such ,we are all aware that God is love and that he loves every sinner though he hates the sin. Moreover when Jesus said , "If anyone does not hate his father, mother , wife ,children and even his own self he cannot be my disciple" , he was not asking us to hate our parents and family but to prefer him above them. It is in the same way God preferred not to choose Esau to be the forefather of Christ.He chose Jacob to be the forefather of Christ and the patriarch of the nation of Israel. 

Though Abraham had many Children , yet it was the child of promise whom God chose to be the patriarch of Israel and though Rebecca had two Children , it was Jacob who was chosen to be the patriarch of Israel. 

God chose abraham and his descendents through whom Christ will enter the world . He is the promise of God given to Abraham . In Christ is promised  salvation for whoever would believe.

Paul is tracing the lineage of Israel and says God is sovereign to Choose any nation to be his representatives and to bring forth Jesus in the flesh. 

It's all about Christ and for Christ.