that is because God promised them a Messiah and land for thousands and thousands of years and they have not seen their salvation! (they've been waiting since, what the time of King David??).... instead of seeing that the Messiah already came and salvation is available for both Jew and Gentile, they rather see that this God has not delivered on His promises...
praying for their eyes to be opened.
One day all knees will bow to Christ, either in a condition of redemption or judgment.
Today is the day of salvation.
No mistake about it, those wanting to help Jewish people through wores and political strong arming do not know the gospel and its power, nor have they listened to many Jewish groups against Zionism to take a great offense at evangelicals getting in their business.
Time to get back the New Testament. It holds the answers for mankind, for whoever will hear.