Romans 11
20 Ref Truly, because they had no faith they were broken off, and you have your place by reason of your faith. Do not be lifted up in pride, but have fear;
21 Ref For, if God did not have mercy on the natural branches, he will not have mercy on you.
22 Ref See then that God is good but his rules are fixed: to those who were put away he was hard, but to you he has been good, on the condition that you keep in his mercy; if not, you will be cut off as they were.