Matthew 7:15
And beware of false prophets, who come to you in sheeps clothing, but inwardly they are ravenous wolves.
2 Timothy 4:3
For the time will come, when they will not bear sound doctrine; but having itching ears, will heap up to themselves teachers after their own hearts:
2 Peter 2:1-3
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 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.