Matthew 7:15
Beware of false prophets; they come to you with the garb of sheep but at heart they are ravenous wolves.
2 Corinthians 11:13
'Apostles'? They are spurious apostles, false workmen ??they are masquerading as 'apostles of Christ.'
2 Peter 2:1-3
Still, false prophets did appear among the People, as among you also there will be false teachers, men who will insinuate destructive heresies, even disowning the Lord who ransomed them; they bring rapid destruction on themselves,
1 John 4:1
Do not believe every spirit, beloved, but test the spirits to see if they come from God; for many false prophets have emerged in the world.
Revelation 19:20
But the Beast was seized, together with the false Prophet who had performed in his presence the miracles by means of which he seduced those who received the mark of the Beast and worshipped his statue; both of them were flung alive into the lake of fire that blazes with brimstone,