Romans 11:5, 16, 26

So too, at the present time there is a remnant chosen by grace.

If the part of the dough offered as firstfruits is holy, then the whole batch is holy; if the root is holy, so are the branches.

and in this way all Israel will be saved. As it is written: “The deliverer will come from Zion; he will turn godlessness away from Jacob.