Well; because of unbelief they were broken off, and you stand by faith. Be not arrogant, but fear:
All Commentaries on Romans 11:20 Go To Romans 11
Cyprian of Carthage
AD 258
I hear that some are puffed up and are arrogant, although it is written, "Be not high-minded, but fear: for if God spared not the natural branches, take heed lest He also spare not thee.".
Of this same thing to the Romans: "Be not high-minded, but fear; for if God spared not the natural branches, (take heed) lest He also spare not thee."