Having recently read the OT, I can not possibly see how anyone could come to the conclusion that God is done with Israel.
I really like verses Jer 31:35-37 which basically says that God could no more forget Israel as he could forget the sun, the moon, the stars, and the sea and the laws that govern them and that Israel will always be a nation before him.
Then there is Luke 13:35 (Behold, your house is left unto you desolate: and verily I say unto you, Ye shall not see me, until the time come when ye shall say, Blessed is he that cometh in the name of the Lord.) The the church replaced Israel, then Jesus should have come back again since we have no problem saying blessed is he that cometh in the name of the Lord.
Zech 14:1-22 speaks about a time in the Millennium dealing with Israel and all the other nations will have to honor God once a year at the Festival of Booths or they get the flesh eating disease. This obviously has not yet happened.
Jer 33:23-26 and Ezek 13:20-22 are also very good. Tried to post the actual verses but I was limited on the length.