what does the bible say about false prophets.

[tsr]

Matthew 7:15 - Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves. 2 Peter 2:1 - But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.

How to spot a false prophet?
3 Warning Signs

1. They "Prophesy" from Their Own Delusions "Then the Lord said to me, 'The prophets are prophesying lies in my name. ...
2. What They Say Does Not Come True "You may say to yourselves, 'How can we know when a message has not been spoken by the Lord?'
3. They Lead People Away from Christ

 

[Mark51]

Matthew 7:15 - Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves. 2 Peter 2:1 - But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.

How to spot a false prophet?
3 Warning Signs

1. They "Prophesy" from Their Own Delusions "Then the Lord said to me, 'The prophets are prophesying lies in my name. ...
2. What They Say Does Not Come True "You may say to yourselves, 'How can we know when a message has not been spoken by the Lord?'
3. They Lead People Away from Christ

Constantly pray in order to develop and maintain accurate knowledge so that you may be able to discern "false prophets." Consider the following scriptures-although many and not inclusive-that mentions false prophets; and, or how to recognize them.-Deuteronomy 13:1, 2, 5; Jerimiah 6;13-15; 14:14-16; 23:16, 17, 21, 25-32; 27:9, 10, 15; Lamentations 2:14; Ezekiel 13:2-4, 6; Zechariah 13:2-4; Matthew 7:15-20; 24:11, 23; John 15:2; Philippians 1:9, 10; Colossians 1:10; 1 Timothy 4:1-3; 1 John 4:11.

Yes, a lot of reading, but this may help you get a sense of your concern.