Romans 11:16, 28

And since Abraham and the other patriarchs were holy, their descendants will also be holy—just as the entire batch of dough is holy because the portion given as an offering is holy. For if the roots of the tree are holy, the branches will be, too.

Many of the people of Israel are now enemies of the Good News, and this benefits you Gentiles. Yet they are still the people he loves because he chose their ancestors Abraham, Isaac, and Jacob.