Luke 12:9-11

9But he who denies Me before men will be denied in the presence of the angels of God.

10And everyone who speaks a word against the Son of Man, it will be forgiven him; but he who blasphemes against the Holy Spirit [that is, whoever intentionally discredits the Holy Spirit by attributing the authenticating miracles done by Me to Satan], it will not be forgiven him [for him there is no forgiveness].

11When they bring you before the synagogues and the magistrates and the authorities, do not be worried about how you are to defend yourselves or what you are to say;