They are still God's chosen people.
Romans 11:28-29 28As concerning the gospel, they are enemies for your sakes: but as touching the election, they are beloved for the fathers' sakes. 29For the gifts and calling of God are without repentance.
Jeremiah 31:35-37 35Thus saith the LORD, which giveth the sun for a light by day, and the ordinances of the moon and of the stars for a light by night, which divideth the sea when the waves thereof roar; The LORD of hosts is his name: 36If those ordinances depart from before me, saith the LORD, then the seed of Israel also shall cease from being a nation before me for ever. 37Thus saith the LORD; If heaven above can be measured, and the foundations of the earth searched out beneath, I will also cast off all the seed of Israel for all that they have done, saith the LORD.