Luke 12:8-10

And I say unto you, Every one who shall confess me before men, him shall the Son of man also confess before the angels of God: but he that denieth me in the presence of men shall be denied in the presence of the angels of God. And every one who shall speak a word against the Son of man, it shall be forgiven him: but unto him that blasphemeth against the Holy Spirit it shall not be forgiven.