God gave the earth to human kind, but one small portion of it He reserved for His chosen people, the Jews . This was not an absolute gift but one conditional upon obedience to the Law. Disobedience did not cancel God's gift itself but did mean loss of the land temporarily. His love remained and remains on His people - for the sake of His servants Abraham, Moses, and David, if for no other reason.
The coming of Messiah did not mean the gift was canceled but merely that the relationship between God and His people(and through His people to the whole world) had to change. Since it was obvious the Law could not be kept to any degree, the relationship had to be transformed into one based on acceptance of Jesus as the Lamb of God. When this did not happen, when the Jews were disobedient again, they forfeited the land - again.
God's love for the Jews remains. He has a plan for them. And this is certain: anyone who opposes God's plan will face destruction, whether that be Nazi Germany, Stalin's Russia, the new EU, the Islamic world, or preachers in this country or elsewhere.
What part, specifically, is not factual?
God's love for the Jews remains. He has a plan for them.
God indeed has an elect remnant from among the Jewish people chosen before the foundation of the world. The dispensationalist error comes from confusing modern, secular Israel with this divine election.