Romans 11:20-23

20That is correct: They were broken off because of unbelief, but you stand by faith. Do not be arrogant, but be afraid. 21For if God did not spare the natural branches, He will certainly not1 spare you either.

22Take notice, therefore, of the kindness and severity of God: severity to those who fell, but kindness to you, if you continue in His kindness. Otherwise you also will be cut off. 23And if they do not persist in unbelief, they will be grafted in, for God is able to graft them in again.