John 9:22,34
These words spoke his parents, because they feared the Jews: for the Jews had agreed already, that if any man did confess that he was Christ, he should be put out of the synagogue.
Nave's Topical Index—AKJV

John 12:42
Nevertheless among the chief rulers also many believed on him; but because of the Pharisees they did not confess him, lest they should be put out of the synagogue:
Nave's Topical Index—AKJV

John 16:2
They shall put you out of the synagogues: yes, the time comes, that whoever kills you will think that he does God service.
Nave's Topical Index—AKJV