2 Peter 2:1
But there were indeed false prophets among the people of old, as there will be also among you false teachers, who will privately introduce pernicious heresies, denying even the Lord that bought them, and bringing upon themselves swift destruction,
Revelation 2:20
But I have a few things against thee; because thou sufferest the woman Jezabel, who saith that she is a prophetess, to teach and to seduce my servants to commit fornication and to eat things sacrificed to idols.
Revelation 19:20
And the beast was taken, and with him the false prophet, who had wrought signs before him, by which he deceived those who had received the mark of the beast, and those who worshipped his image. These both were cast alive into the lake of fire burning with brimstone.