[Grey Ghost II]

Which is the relevant covenant for our Jewish brethern?

The New Covenant was for everyone. I don't recall there being any grandfather clauses.

[A Jovial Cad]

*The New Covenant was for everyone. I don't recall there being any grandfather clauses*

Then you obviously haven't been reading much from the New Testament about the matter: "26. And so all Israel will be saved, as it is written: 'The Deliverer will come out of Zion, And He will turn away ungodliness from Jacob; 27. For this is My covenant with them, When I take away their sins.' 28. Concerning the gospel they are enemies for your sake, but concerning the election they are beloved for the sake of the fathers. 29. For the gifts and the calling of God are irrevocable." --Romans 11:26-29
Do strive to get a clue about such things before you post--it tends to lessen the cringing embarrassment factor considerably.