Romans 11:17-18

17Israel's people are like an olive tree that a farmer has planted. But God has broken off some of that tree's branches. Then he has taken a branch from a wild olive tree. He has put that wild branch into the farmer's tree, to become part of that tree. You Gentiles are like the wild branch. Now you receive food from the root of the farmer's tree, to make you strong.

18Israel's people are like the branches that God broke off. But you must not think that you are better than those branches. Remember that you are still only a branch. You do not make the root strong. No, it is the root that holds you up and makes you strong.