Boast not against the branches. But if you boast, you bear not the root, but the root you.
All Commentaries on Romans 11:18 Go To Romans 11
Jerome
AD 420
Whenever I see a synagogue, the thought of the apostle always comes to me—that we should not boast against the olive tree whose branches have been broken off but rather fear. For if the natural branches have been cut off, how much more we who have been grafted on the wild olive should fear, lest we become like them.
