are you aware that before Christ, During the 2nd century BC, the Edomites were forcibly converted to Judaism by the Hasmoneans, and were incorporated into the Jewish nation. so Paul's message in Romans still accounts for 100% Jews as a heritage. don't you know how to research and get FACTS?
This division got again reflected when Jesus came to the world. The common people / Israel accepted Jesus while the upper class / Edom rejected Him; just as God had blessed Jacob and cursed Esau in the past, Jacob now blessed Him and Esau cursed Him. The reason was that the Edomites actually wanted to take revenge and destroy Israel, and as they knew Jesus was the Messiah of the Israelites, they attempted to kill Him as soon as He was born. After they failed and Jesus began to convert the people of Israel, they went on to conspire against Him. Jesus knew about them as well, and this is why He called them hypocrites, brood of vipers and children of Satan. Furthermore, the Pharisees openly admitted to Jesus that they were not Israelites, when they mentioned they were never slaves to anybody.
After the resurrection of Jesus, the Israelites became the early Christians, and the Edomites the religious Jews. After the destruction of Jerusalem in 70 AD, both the Israelites and the Edomites went into exile and spread around the world. The Edomites settled mostly in Khazaria and North Africa, later in Europe. The Khazar Edomites and African Edomites eventually became what we know today as the Ashkenazic and Sephardic Jews.
And where is the proof modern "Israel" is not Israel? The answer is in prophecy:
Isaiah 65:15 You shall leave your name to my chosen for a curse,
and the Lord God will put you to death,
but his servants he will call by another name,
As you read, God will give Israel another name. How in the world can a state named "Israel" claim to be the Biblical Israel, when God prophesied Israel will have ANOTHER name???