'Branches' in the Bible

Now if the first fruits [are] holy, [so] also [is] the [whole] batch of dough, and if the root [is] holy, [so] also [are] the branches.

Now if some of the branches were broken off, and you, [although you] were a wild olive tree, were grafted in among them and became a sharer of the root of the olive tree's richness,

do not boast against the branches. But if you boast against [them], you do not support the root, but the root [supports] you.

Then you will say, "Branches were broken off in order that I could be grafted in."

For if God did not spare the {natural} branches, neither will he spare you.

For if you were cut off from what is by nature a wild olive tree, and contrary to nature were grafted into a cultivated olive tree, how much more will these who are {natural branches} be grafted into their own olive tree?