Romans 11:20-22
11:20 Granted! They were broken off because of their unbelief, but you stand by faith. Do not be arrogant, but fear!
11:21 For if God did not spare the natural branches, perhaps he will not spare you.
11:22 Notice therefore the kindness and harshness of God – harshness toward those who have fallen, but God’s kindness toward you, provided you continue in his kindness; otherwise you also will be cut off.