"Their own scripture is a proof against them since God has already described them as a hard headed nation, and a people who rebelled and earned God's wrath even during their best generation (the generation of Moses)."
When the Bible (that we now have) describes these things, it never suggests that God has taken His covenant away from Israel. The same prophets who criticise their people so harshly speak about an incredible restoration of their nation's knowledge of God, and in the meantime they repeat the promise that God's testimony will not leave the mouths of them or their descendants forever. The fact that these prophets were speaking and that Jewish people took their words, however harsh, preserved them as scripture, and often tried to live in the light of their message, is a historical reality and an important thing to remember. Other nations totally have a place in that, but Jews and Gentiles who love God have two different roles in serving Him. If that's what He chose and designed then it's not something we can question, but it is something to lift to Him for His glory and praise.
When the Bible (that we now have) describes these things, it never suggests that God has taken His covenant away from Israel. The same prophets who criticise their people so harshly speak about an incredible restoration of their nation's knowledge of God, and in the meantime they repeat the promise that God's testimony will not leave the mouths of them or their descendants forever. The fact that these prophets were speaking and that Jewish people took their words, however harsh, preserved them as scripture, and often tried to live in the light of their message, is a historical reality and an important thing to remember. Other nations totally have a place in that, but Jews and Gentiles who love God have two different roles in serving Him. If that's what He chose and designed then it's not something we can question, but it is something to lift to Him for His glory and praise.