How are the Jews beloved even though they are enemies of the Gospel?

Concerning the Gospel, the Jews are enemies for the Gentiles' sake, but as touching election they are beloved for the fathers' sake. God's special relationship with Abraham, Isaac, and Jacob—especially His love for Abraham—means He extends salvation to them in His elective purpose.

Les teaches that concerning the Gospel, the Jews are enemies for the sake of the Gentiles, but that does not mean they should be destroyed or lost sight of. As touching election, God is still extending salvation to them, and they are beloved for the fathers' sake. Les identifies those fathers as Abraham, Isaac, and Jacob. He points out that God had a special relationship with Abraham and loved Abraham, as well as David, a man after His own heart. This is why, even while opposing Paul's Gospel of the Grace of God, the Jews remain beloved in God's elective purpose.

Romans 11:28

As concerning the gospel, they are enemies for your sakes: but as touching the election, they are beloved for the fathers’ sakes.

Is God extending salvation to the Jews according to election?

Yes. As touching election, God is extending salvation to the Jews, and they are beloved for the fathers' sake. Although concerning the Gospel they are enemies, that opposition does not nullify God's elective purpose because of His special relationship with Abraham, Isaac, and Jacob.