"For if you were cut out of what is by nature a wild olive tree and grafted in to a cultivated olive tree, how much more will these natural branches be grafted back into their own olive tree!"
True, but in the meantime, the cut off ones are not part of the tree.
John 8:44-45. "You are of your father the devil, and you want to do the desires of your father. He was a murderer from the beginning, and does not stand for the truth, because there is no truth in him. Whenever he speaks a lie, he speaks from his own nature; for he is a liar and the father of lies. But because I speak the truth, you do not believe me."
Rev. 3:9. "Behold I will cause those of the synagogue of Satan, who say that they are Jews and are not, but lie, I will make them to come and bow down at your feet..."