The jealousy of Israel is fulfilled when Christ returns and they recognize "Who He IS."
That doesn't quite square with the idea of the salvation of Israel, does it?
For the gifts and calling of God [are] without repentance. - Romans 11:18-29
However, the rejection of them are.
This is according to His will.
And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive: For this people's heart is waxed gross, and [their] ears are dull of hearing, and their eyes they have closed; lest at any time they should see with [their] eyes, and hear with [their] ears, and should understand with [their] heart, and should be converted, and I should heal them. But blessed [are] your eyes, for they see: and your ears, for they hear. Matthew 13:14-16