2 Peter 2:1-22
But there were false prophets also among the people, even as there shall be false teachers among you, who privately shall bring in damnable heresies, even denying the Lord that bought them, and bring on themselves swift destruction.
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1 John 4:1
Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
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Matthew 7:15
Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
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Romans 16:17-18
Now I beseech you, brothers, mark them which cause divisions and offenses contrary to the doctrine which you have learned; and avoid them.
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Jude 1:4
For there are certain men crept in unawares, who were before of old ordained to this condemnation, ungodly men, turning the grace of our God into lasciviousness, and denying the only Lord God, and our Lord Jesus Christ.
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2 John 1:9
Whoever transgresses, and stays not in the doctrine of Christ, has not God. He that stays in the doctrine of Christ, he has both the Father and the Son.
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2 Timothy 4:2
Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all long-suffering and doctrine.
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2 John 1:10
If there come any to you, and bring not this doctrine, receive him not into your house, neither bid him God speed:
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2 Timothy 4:3
For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
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Colossians 2:8
Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
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Matthew 7:1-29
Judge not, that you be not judged.
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