Matthew 7:15
"Look out for false prophets, who come to you under the guise of sheep, but inside they are devouring wolves.
Romans 16:18
For such men are really not serving our Lord Christ but their own base appetites, and by their fair and flattering talk they are deceiving the hearts of unsuspecting people.
2 Corinthians 11:13-15
For such men are sham apostles, dishonest workmen, masquerading as apostles of Christ.
Galatians 2:4
they did not try it even for the sake of the false brothers who had been smuggled in, who stole in to spy out the freedom we enjoy in Christ Jesus, so as to make us slaves again.
Ephesians 4:14
so that we may not be babies any longer, or like sailors tossed about and driven around by every wind of doctrine, by the trickery of men through their cunning in inventing new methods of error.
2 Thessalonians 2:9-10
that is, the representative of lawlessness, whose coming is in accordance with the working of Satan, with his plenitude of power and pretended signs and wonders,
1 Timothy 4:1-2
Now the Spirit distinctly declares that in later times some will turn away from the faith, because they continuously give their attention to deceiving spirits and the things that demons teach
Titus 1:10-12
For there are many insubordinate people, mere talkers with nothing to say, but deceivers of their own minds, especially those of the circumcision party,
Revelation 13:11-14
Then I saw another wild beast coming up out of the land. He had two horns like a lamb, but he spoke like a dragon.
Revelation 19:20
Then the wild beast was captured and with him the false prophet who performed wonders in his presence, by which he led astray those who let the mark of the wild beast be put on them and worshiped his statue. Both of them were hurled alive into the fiery lake that burns with brimstone.