John 9:22

22 His parents said this because they were afraid of the Jewish leaders, who already had decided that anyone who acknowledged that Jesus was the Messiah would be put out of the synagogue.

Read John 9:22 Using Other Translations

These words spake 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.
(His parents said these things because they feared the Jews, for the Jews had already agreed that if anyone should confess Jesus to be Christ, he was to be put out of the synagogue.)
His parents said this because they were afraid of the Jewish leaders, who had announced that anyone saying Jesus was the Messiah would be expelled from the synagogue.