2 Peter 2:1-3
But there were also false prophets among the people, even as there will be false teachers among you; who will privately introduce destructive sects, denying even the Lord who bought them, bringing on themselves swift destruction.
1 John 4:1
Beloved, do not believe every spirit, but try the spirits, whether they be from God; because many false prophets are gone forth into the world.
2 John 1:7-11
for many deceivers are entered into the world, who do not confess Jesus Christ did come in the flesh. This is the deceiver, and the antichrist.
Jude 1:4
For certain men have come in privily, who long ago were before written to this very condemnation; ungodly men, perverting the favor of our God to lasciviousness, and denying the only sovereign Lord, even our Lord Jesus Christ.
Revelation 2:14-15
Nevertheless, I have a few things against you, that you have there, them who hold the doctrine of Balaam, who taught Balak to cast a stumbling block before the children of Israel, to eat things sacrificed to idols, and to commit fornication.
Revelation 2:20
Nevertheless, I have against you, that you permit that woman Jezebel, who says that she is a prophetess, to teach and to seduce my servants to commit fornication, and to eat things sacrificed to idols.
Revelation 12:9
And thus the great dragon was cast out; even the old serpent called the Devil, and Satan, who deceives the world, was cast out to the earth; and his angels were cast out with him.
Revelation 19:20
And the beast was taken captive, and with him the false prophet, who had wrought signs before him, by which he deceived those who received the mark of the beast, and those who worshiped his image; both of whom were cast alive into the lake of fire which burned with brimstone.