Romans 11 v 16 - 24

(Broken Branches)

For it is the first fruit is holy, the lump is also holy; ; and  the root is holy, so are the branches. And some of the branches were broken off, and you, being a wild olive tree, were grafted in among them, and with them became a partaker of the root and the fatness of the olive tree, do not boast against the branches. But if you do boast, remember that you do not support the root, but the root supports you.

You will say then, Branches were broken off that I be grafted in, Well said, Because, of unbelief they were broken off, and you stand by faith. Do not be haughty, but fear: for it is faith for if God did not spare the natur.

al branches, He may not spare you either. Therefore consider the goodness and severity of God: on those who fell, severity; but toward you, goodness, if you continue in His goodness. Otherwise you will be cut off. And they also , if they do not Continue in unbelief, will be grafted again. For if you were cut off from the olive tree which is wild by nature, and were  grafted contrary to nature into a cultivated olive tree, how much more will these, who are natural branches, be grafted into their own olive tree.