Matthew 7:15
"Look out for deceiving prophets, who approach you wearing sheep's clothing, but who are [actually] starving wolves in their hearts.
1 John 4:1
Loved ones, do not believe [the message of] every spirit [i.e., every person claiming to be a teacher], but test the spirits [i.e., require proof that they and their message are genuine] to see whether they represent God [or not], because many false prophets have begun circulating throughout the world.
Colossians 2:8
Pay attention so that no one takes you [spiritually] captive through his philosophy and empty deception based on human tradition, according to the principles of the world and not according to Christ.
Matthew 24:11
And many false prophets will appear and will lead many people away [from the truth].
2 Peter 2:1-3
But just as there were false prophets among the people before, there will also be false teachers among you [Christians]. They will privately teach harmful doctrines that destroy people [spiritually], by even denying [that Jesus is] the Master, [and thereby] destroying themselves quickly.
Luke 6:26
It is too bad for you people when everyone speaks well about you, because the forefathers said the same thing about the false prophets.
Revelation 19:20
But the beast was captured, along with the false prophet [See 16:13], who performed [supernatural] signs in his presence. [He had performed these signs] to deceive those who had received the mark of the beast and those who worshiped his statue. [See 13:15-16]. The beast and the false prophet were both thrown alive into the lake of fire that burns with sulphur.
Matthew 10:17
But, watch out for people, for they will turn you over to the [Jewish] councils [for judgment] and will have you flogged in their synagogues.
Matthew 16:6
Jesus said to them, "Pay attention and watch out for the leavening [effect] of the Pharisees and Sadducees."
Matthew 16:11
How is it that you do not understand that I was not speaking to you about [physical] bread? But [rather I meant] watch out for the yeast [i.e., the influence] of the Pharisees and Sadducees."
Matthew 24:4-5
And Jesus answered them, "Pay attention so that no one leads you astray [from the truth].
Matthew 24:24-25
For false Christs and false prophets will appear and they will perform great [miraculous] signs and [supernatural] wonders in order to lead astray even the elect [i.e., God's people], if possible.
Mark 12:38-40
In His teaching Jesus said, "Look out for the experts in the law of Moses, who like to walk around in long [flowing] robes and to receive special greetings at the open shopping markets
Mark 13:22-23
For false Christs and false prophets will appear and they will perform [miraculous] signs and [supernatural] wonders in order to lead astray [even] the elect, if possible.
Luke 12:15
And [then] He said to them, "Be careful and guard yourselves against [practicing] all forms of greed, for a person's life does not consist of having a lot of possessions."
John 10:12
The person who is [only] a hired hand, and not the shepherd, [and] who does not own the sheep [himself], sees the wolf coming and leaves the sheep and runs away. So, the wolf attacks the flock and scatters [the sheep].
Acts 13:40
Beware that what was spoken by the prophets does not happen to you:
Acts 20:29-31
[Because] I know that after I am gone [from here] there will be vicious wolves [i.e., ravaging false teachers] who will come in among you, and they will not spare the flock [i.e., the congregation].
Romans 16:17-18
Now I urge you, brothers, watch out for those who are causing divisions and occasions for falling [away from God over matters] contrary to the teaching you have learned, and withdraw from them [i.e., stop listening to their false teaching].
2 Corinthians 11:13-15
For such men are false apostles; they are deceitful workers, who disguise themselves as [true] apostles of Christ.
Galatians 2:4
For [certain] false brothers, who were secretly brought in to observe us practicing our liberty in Christ Jesus [i.e., by not having Titus circumcised], attempted to place us [back] under the bondage [of Mosaic law keeping].
Ephesians 4:14
Then we will no longer be [spiritual] babies, tossed back and forth [by waves], and blown around by every wind of [false] teaching, [deceived] by the clever trickery of people using deceptive schemes.
Ephesians 5:6
Do not let anyone deceive you with empty words, for because of such things, the wrath of God will fall upon people who are disobedient [to Him].
Philippians 3:2
Watch out for the "dogs!" [Note: "Dogs" were viewed with disgust by the ancient Jews (Deut. 23:18; II Kings 8:13; Rev. 22:15), so the term is used here derogatorily for Jewish Christians who were trying to impose on the church the requirements of the law of Moses]. Watch out for the evil workers! Watch out for those who mutilate the body meaninglessly! [Note: Paul here alludes, in a derogatory wordplay, to the Jewish practice of circumcision].
1 Timothy 4:1-3
Now the Holy Spirit specifically says that in later times [Note: "Later times" in the New Testament usually refers to the period following the first coming of Christ and the establishment of the church], some people will fall away from the faith [i.e., the true teaching of Christianity]. They will pay attention to deceitful spirits [i.e., lying people] and the teaching of evil spirits.
2 Timothy 3:5-9
[These people] maintain an appearance of being godly, but they have denied its power; [you should] turn away from such people.
2 Timothy 3:13
But evil people and impostors will go from bad to worse [in their behavior], deceiving people and being deceived by them.
2 Timothy 4:3
For the time will come when people will not tolerate sound teaching, but will assemble to themselves teachers who will satisfy what their "itching ears" want to hear.
2 Peter 2:18-19
[Although] their talk is big, what they say is worthless, and by [offering people] fleshly desires [i.e., sexual gratification], they lead people astray, who are barely escaping from the error of the world.
2 Peter 3:17
Therefore, dearly loved ones, since you know about these things ahead of time, be on your guard so that you are not led astray by the error of lawless people, and [thus] fall from your own stability [i.e., your safe or secure position in Christ].
Jude 1:4
For certain men have secretly infiltrated [your ranks]; they are men who had been written about long ago that they should be judged [and condemned] for perverting the unearned favor of our God into [a license for] living unrestrained, indecent lives, and who deny [the identity and work of] our only Master and Lord, Jesus Christ.
Revelation 13:11-17
Then I saw another [i.e., a second] beast coming up from the earth. He had two horns like a lamb and spoke like a dragon.
Revelation 16:13
And I saw three evil spirits that looked like frogs; [one was] coming out of the mouth of the dragon, [one] out of the mouth of the beast, and [one] out of the mouth of the false prophet.
Revelation 17:6
And I saw that the woman was drunk on the blood of God's holy people and on the blood of those [who were killed] witnessing about Jesus. And when I saw her I was greatly amazed.
Acts 13:6
When they had traveled across the whole island they came to Paphos [a town on the island of Cyprus]; [there] they met a certain magician named Bar-Jesus, who was a Jewish false prophet.