Romans 11:13-16

But now I am speaking to you who are Gentiles. Inasmuch then as I am an apostle to the Gentiles, I magnify my ministry, in the hope of somehow making my fellow countrymen jealous [by stirring them up so that they will seek the truth] and perhaps save some of them. For if their [present] rejection [of salvation] is for the reconciliation of the world [to God], what will their acceptance [of salvation] be but [nothing less than] life from the dead? If the first portion [of dough offered as the first fruits] is holy, so is the whole batch; and if the root (Abraham, the patriarchs) is holy, so are the branches (the Israelites). [Num 15:19-21]