Matthew 7:15-20 Beware of false prophets, who come to you in sheep's clothing but inwardly are ravenous wolves. (16) You will recognize them by their fruits. Are grapes gathered from thornbushes, or figs from thistles? (17) So, every healthy tree bears good fruit, but the diseased tree bears bad fruit. (18) A healthy tree cannot bear bad fruit, nor can a diseased tree bear good fruit. (19) Every tree that does not bear good fruit is cut down and thrown into the fire. (20) Thus you will recognize them by their fruits.
Matthew 24:4-14 And Jesus answered them, See that no one leads you astray. (5) For many will come in my name, saying, ‘I am the Christ,’ and they will lead many astray. (6) And you will hear of wars and rumors of wars. See that you are not alarmed, for this must take place, but the end is not yet. (7) For nation will rise against nation, and kingdom against kingdom, and there will be famines and earthquakes in various places. (8) All these are but the beginning of the birth pains. (9) “Then they will deliver you up to tribulation and put you to death, and you will be hated by all nations for my name's sake. (10) And then many will fall away and betray one another and hate one another. (11) And many false prophets will arise and lead many astray. (12) And because lawlessness will be increased, the love of many will grow cold. (13) But the one who endures to the end will be saved. (14) And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.
Matthew 24:23-27 Then if anyone says to you, ‘Look, here is the Christ!’ or ‘There he is!’ do not believe it. (24) For false christs and false prophets will arise and perform great signs and wonders, so as to lead astray, if possible, even the elect. (25) See, I have told you beforehand. (26) So, if they say to you, ‘Look, he is in the wilderness,’ do not go out. If they say, ‘Look, he is in the inner rooms,’ do not believe it. (27) For as the lightning comes from the east and shines as far as the west, so will be the coming of the Son of Man.
Mark 13:5-6 And Jesus began to say to them, See that no one leads you astray. (6) Many will come in my name, saying, ‘I am he!’ and they will lead many astray.
Mark 13:21-23 And then if anyone says to you, ‘Look, here is the Christ!’ or ‘Look, there he is!’ do not believe it. (22) For false christs and false prophets will arise and perform signs and wonders, to lead astray, if possible, the elect. (23) But be on guard; I have told you all things beforehand.
Luke 6:26 Woe to you, when all people speak well of you, for so their fathers did to the false prophets.
Luke 21:8 And he said, See that you are not led astray. For many will come in my name, saying, ‘I am he!’ and, ‘The time is at hand!’ Do not go after them.