Romans 11:5, 16, 26

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

If the dough offered as firstfruits is holy, so is the whole lump, and 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 banish ungodliness from Jacob”