Yes and no. Jews (Israel) has to endure to the end and keep the law of Moses. If they reject our Lord Jesus Christ, they are condemned already. We are saved by grace, they are not. To drive them to jealousy.
I agree with you ... saved by grace, and the Jews have the same opportunity to the same process as us. Through grace of accepting Jesus and being born again. There is no way they can keep all the laws and get there.
All people are saved by grace ... that's the new covenant of Christ for all men. I believe even King David was saved by grace and somehow understood and believed there was to be a promised one to come ... which he called "My Lord." as in [The LORD said unto My LORD.]