'Broken off' in the Bible

But if some of the branches were broken off, and thou a wild-olive wert grafted in among them, and art made a partaker together with them of the root and fatness of the olive; boast not against the branches:

Wilt thou say then, The branches were broken off, that I might be grafted in?

Well; they were broken off for their infidelity, and thou standest by faith: therefore be not high-minded but fear.