Matthew 24:5, 24
For many will come in My name, claiming, 'I am the Christ, ' and will deceive many. . . .

Matthew 7:15
Beware of false prophets. They come to you in sheep's clothing, but inwardly they are ravenous wolves.

Mark 13:22
For false Christs and false prophets will appear and perform signs and wonders that would deceive even the elect, if that were possible.

Acts 20:30
Even from your own number, men will rise up and distort the truth to draw away disciples after them.

1 Timothy 4:1
Now the Spirit expressly states that in later times some will abandon the faith to follow deceitful spirits and the teachings of demons,

2 Peter 2:1
Now there were also false prophets among the people, just as there will be false teachers among you. They will secretly introduce destructive heresies that even deny the Master who bought them, bringing swift destruction on themselves.

1 John 2:18, 26
Children, it is the last hour; and just as you have heard that the antichrist is coming, so now many antichrists have appeared. This is how we know that it is the last hour. . . .

1 John 4:1
Beloved, do not believe every spirit, but test the spirits to see whether they are from God. For many false prophets have gone out into the world.

Jude 1:4
For certain men have crept in among you unnoticed--ungodly ones who were designated long ago for condemnation. They turn the grace of our God into a license for immorality, and they deny our only Master and Lord, Jesus Christ.

Revelation 19:20
But the beast was captured, and with him the false prophet who had performed signs on his behalf, by which he deceived those who had the mark of the beast and worshiped its image. Both of them were thrown alive into the fiery lake of burning sulfur.