'Root' in the Bible

And if the first-fruit is holy, so is the mass: and if the root is holy, so are the branches.

But if some of the branches were broken off, and you, an olive-tree of the fields, were put in among them, and were given a part with them in the root by which the olive-tree is made fertile,

Do not be uplifted in pride over the branches: because it is not you who are the support of the root, but it is by the root that you are supported.

And again Isaiah says, There will be the root of Jesse, and he who comes to be the ruler over the Gentiles; in him will the Gentiles put their hope.