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."

Cross References (ranked by relevance)

Matthew 7:15 28

Beware of false prophets, which come to you in sheep’s clothing, but inwardly they are ravening wolves.

Jude 1:4 24

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.

Matthew 24:11 18

And many false prophets shall rise, and shall deceive many.

2 Timothy 4:3 18

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;

2 Peter 2:3 16

And through covetousness shall they with feigned words make merchandise of you: whose judgment now of a long time lingereth not, and their damnation slumbereth not.

Galatians 2:4 14

And that because of false brethren unawares brought in, who came in privily to spy out our liberty which we have in Christ Jesus, that they might bring us into bondage:

1 Corinthians 11:19 13

For there must be also heresies among you, that they which are approved may be made manifest among you.

Mark 13:22 11

For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect.

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.

Philippians 3:19

Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)

Titus 3:10

A man that is an heretick after the first and second admonition reject;

Matthew 24:24

For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.

Titus 1:11

Whose mouths must be stopped, who subvert whole houses, teaching things which they ought not, for filthy lucre’s sake.

Hebrews 10:29

Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?

Colossians 2:18

Let no man beguile you of your reward in a voluntary humility and worshipping of angels, intruding into those things which he hath not seen, vainly puffed up by his fleshly mind,

Ephesians 4:14

That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive;

1 Corinthians 6:20

For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s.

Matthew 10:33

But whosoever shall deny me before men, him will I also deny before my Father which is in heaven.

Revelation 2:9

I know thy works, and tribulation, and poverty, (but thou art rich) and I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan.

Matthew 24:5

For many shall come in my name, saying, I am Christ; and shall deceive many.