Romans 11:16-17

If the first piece of bread is offered to God, then the whole loaf is made holy. If the roots of a tree are holy, then the tree’s branches are holy too. It is as if some of the branches from an olive tree have been broken off. You non-Jewish people are like the branch of a wild olive tree that has been joined to that first tree. You now share the strength and life of the first tree, the Jews.