God told Abraham his seed would be blessed. The seed, then, are God's Chosen People, heirs to the promise and the blessing given Abraham. Who are these Chosen People? The Bible alone reveals the great truth:
"So then they which be of faith are blessed with faithful Abraham…That the blessing of Abraham might come on the Gentiles through Jesus Christ; that we might receive the promise of the Spirit through faith. " (Galatians 3:9,14)
"...And to thy seed, which is Christ. " (Galatians 3:16)
" For as many of you as have been baptized into Christ have put on Christ. There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. " (Galatians 3:27-28)
"And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise. " (Galatians 3:29)
Jews and Gentiles alike who are believers in Christ Jesus are Abraham's seed and heirs according to the promise. If you are such a believer, Jew or Gentile, you are one of God's Chosen People. But if you are not of Christ, you are not Abraham's seed, and you do not have the promise and the blessing. You are not among God's Chosen People, even if you are 100% Jew by DNA/race. Jesus said that flesh cannot inherit the Kingdom.
Jew or Gentile, the Bible says that your physical race will not save you. Only through faith in Jesus can you be born again in Spirit and in truth and thus enter the Kingdom of Heaven. Repent today and believe in Him, and you shall be saved.