Matthew 7:15
"Beware of the false prophets who come to you in sheep's clothing, but within they are ravening wolves.
1 John 4:1
Do not believe every spirit, beloved, but test the spirits to see whether they are of God; for many false prophets are gone out into the world.
Matthew 24:24
For false christs and false prophets will arise, and will work great signs and wonders, so as to mislead, if it were possible, the very elect.
Romans 16:18
Turn away from them. For men of that stamp are not the slaves of Christ, but are slaves to their own appetites. By their smooth and fair speech they beguile the hearts of the innocent.
2 Corinthians 11:3
But I fear lest, just as the serpent beguiled Eve in his craftiness, so your minds should be seduced from your single-mindedness and purity toward Christ.
2 Corinthians 11:13-15
For such fellows are sham apostles of Christ.
2 Peter 2:1
But there were false prophets, too, among the people, just as among you also there will be false teachers. These will secretly bring in destructive sects, denying even the Master who bought them, and bringing swift ruin upon themselves.
Revelation 19:20
And the beast was seized, and with him the false prophet who performed miracles in his presence to deceive those who had received the brand of the beast, and those who worshiped his image. The two were thrown alive into the lake of fire, blazing with brimstone.