The elect are already justified ,God knew they would have faith ,that's why their the only one's that don't have free will , God knew them ,like really knew them ,and not because He knows everything ,but because He met them, face to face . Let's look at the scripture you provided .
This chapter deals with how that God knew His children from the time He created their souls in that first earth age. That is why God could say to Jeremiah, "I knew you before you were in your mothers womb". Of course He did, He made Jeremiah's soul and that soul was with Him in the age that was. God knew Jeremiah could be trusted.
Romans 9:11 "(For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of Him That calleth;"
hen when the twins, Jacob and Esau were still in their mother's womb, neither having had the chance of doing either good or evil, God called one of those unborn babies to service. This deals with the election according to the purpose of God in His Will. The reason was to accomplish the writings of these Scriptures. It wasn't an accident that Jacob was loved and Esau was hated, nor was it an accident that you saw the light and repented. God has His hand on all creation and all of His children. God intercedes in the lives of His children, and there are no accidents when it comes to the actions of God.
Romans 9:12 "It was said unto her, "The elder shall serve the younger."
This statement is not according to custom. In Genesis 25:23; "And the Lord said unto her, "Two nations are in thy womb, and two manner of people shall be separated from thy bowels; and the one people shall be stronger than the other; and the elder shall serve the younger."
The younger was to serve the older, and many so called teachers tell how Jacob plotted to get the blessing, they just don't understand that it was God's order from before they were ever born that Jacob would be the superior.
Romans 9:13 "As it is written "Jacob have I loved, but Esau have I hated."
It was written by the Prophet Malachi in Malachi 1:2, 3; "I have loved you, saith the Lord Yet ye say, `Wherein hast Thou loved us?' Was not Esau Jacob's brother? saith the Lord: yet I loved Jacob," "And I hated Esau, and laid his mountains [nations] and his heritage waste for the dragons of the wilderness."
While Esau was a small embryo in his mother Rebecca's womb, God hated Esau. If it sounds a little bit unfair, then you missed the point of the entire eighth chapter where God stipulated where He foreknew those that overcame at Satan's rebellion in the first earth age. Don't you think that God is judge enough to know who to hate and who to love.
One must understand the age before the one we are currently in .