Jude 1:4

For some men have stealthily entered in, who were long ago appointed to this condemnation; ungodly men, who pervert the grace of our God, and use it for lascivious purposes, and deny our only Sovereign and Lord, Jesus Christ.

Galatians 2:4

I acted thus indeed on account of false brethren, stealthily brought in, who stole in to spy out our freedom, which we have in Christ Jesus, that they might bring us into bondage,

1 Peter 2:8

and a stone of stumbling, and a rock of offense to the disobedient, who stumble at the word because they are disobedient, to which stumbling they were also appointed.

1 John 2:22

Who is a liar, but he that denies that Jesus is the Christ? He is antichrist, who denies the Father and the Son.

2 Timothy 3:6

For of this sort are those who worm themselves into houses, and lead captive silly women that are laden with sins, and influenced by various desires,

Matthew 13:25

But while men slept, his enemy came and sowed tares among the wheat, and went away.

John 17:3

And this is life eternal, to know thee, the only true God, and Jesus Christ whom thou has sent.

Acts 11:23

When he had come, and had seen the grace of God, he rejoiced; and he exhorted them all to remain, with purpose of heart, faithful to the Lord.

Acts 15:24

Inasmuch as we have heard that certain persons went out from us and troubled you with words, subverting your souls, saying, That you must be circumcised, and keep the law, to whom we gave no commandment,

Romans 6:1-2

What, then, shall we say? Shall we continue in sin that grace may abound?

Romans 9:21-22

Has not the potter power over the clay, to make from the same mass one vessel for honor, and another for dishonor?

Galatians 5:13

For you have been called to freedom, brethren: only use not your freedom as an occasion for the flesh, but become servants to one another, through love.

Ephesians 4:14

that we might no longer be children, tossed and carried about by every wind of teaching, through the artifice of men, through craftiness used by them for the deliberate planning of deceit;

1 Timothy 6:15-16

which, in his own times, he will show, who is the blessed and only Potentate, the King of kings, and Lord of lords;

Titus 1:15-16

To the pure, all things are pure: but to the denied and unbelieving, nothing is pure; but their mind and their conscience are denied.

Titus 2:11-12

For the grace of God, which brings salvation to all men, has appeared,

Hebrews 12:15-16

taking care, lest any one slight the grace of God; lest any root of bitterness spring up and trouble you, and by this many be defiled;

1 Peter 2:16

as being free, and yet not using your freedom as a cloak for malice, but as servants of God.

1 Peter 4:18

And if the righteous man is hardly saved, where shall the ungodly man and the sinner appear?

2 Peter 2:1-3

But there were false prophets among the people, as there will be false teachers also among you; and these will stealthily introduce ruinous sects, and deny the Lord that bought them, bringing upon themselves swift destruction:

2 Peter 2:5-6

and if he spared not the old world, but brought a flood on the world of the ungodly, and saved Noah, the eighth person, who was a preacher of righteousness;

2 Peter 2:10

but especially those who walk after the flesh in unclean lust, and who despise government. Presumptuous, willful men! they are not afraid to speak evil of dignitaries:

2 Peter 2:18-22

For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.

2 Peter 3:7

But the heavens and the earth that now are, by the same word are kept in store, reserved for fire against the day of judgment, and perdition of ungodly men.

Jude 1:15

to execute judgment upon all, and to convict all the ungodly of all their ungodly works, which they have impiously committed, and of all the hard words which ungodly sinners have spoken against him.

Revelation 15:4

Who will not fear thee, Lord, and glorify thy name? For thou alone art holy; for all nations shall come and worship before thee: because thy judgments are made manifest.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Crept

Matthew 13:25
But while men slept, his enemy came and sowed tares among the wheat, and went away.
Acts 15:24
Inasmuch as we have heard that certain persons went out from us and troubled you with words, subverting your souls, saying, That you must be circumcised, and keep the law, to whom we gave no commandment,
Galatians 2:4
I acted thus indeed on account of false brethren, stealthily brought in, who stole in to spy out our freedom, which we have in Christ Jesus, that they might bring us into bondage,
Ephesians 4:14
that we might no longer be children, tossed and carried about by every wind of teaching, through the artifice of men, through craftiness used by them for the deliberate planning of deceit;
2 Timothy 3:6
For of this sort are those who worm themselves into houses, and lead captive silly women that are laden with sins, and influenced by various desires,
2 Peter 2:1
But there were false prophets among the people, as there will be false teachers also among you; and these will stealthily introduce ruinous sects, and deny the Lord that bought them, bringing upon themselves swift destruction:

Who

Romans 9:21
Has not the potter power over the clay, to make from the same mass one vessel for honor, and another for dishonor?
1 Peter 2:8
and a stone of stumbling, and a rock of offense to the disobedient, who stumble at the word because they are disobedient, to which stumbling they were also appointed.
2 Peter 2:3
and, with delusive words, they will, through covetousness, make gain of you: the condemnation, long ago denounced against these, delays not, and their destruction does not slumber.

Turning

Romans 6:1
What, then, shall we say? Shall we continue in sin that grace may abound?
Galatians 5:13
For you have been called to freedom, brethren: only use not your freedom as an occasion for the flesh, but become servants to one another, through love.
Titus 2:11
For the grace of God, which brings salvation to all men, has appeared,
Hebrews 12:15
taking care, lest any one slight the grace of God; lest any root of bitterness spring up and trouble you, and by this many be defiled;
1 Peter 2:16
as being free, and yet not using your freedom as a cloak for malice, but as servants of God.
2 Peter 2:10
but especially those who walk after the flesh in unclean lust, and who despise government. Presumptuous, willful men! they are not afraid to speak evil of dignitaries:

Denying

Titus 1:15
To the pure, all things are pure: but to the denied and unbelieving, nothing is pure; but their mind and their conscience are denied.
2 Peter 2:1
But there were false prophets among the people, as there will be false teachers also among you; and these will stealthily introduce ruinous sects, and deny the Lord that bought them, bringing upon themselves swift destruction:
1 John 2:22
Who is a liar, but he that denies that Jesus is the Christ? He is antichrist, who denies the Father and the Son.

General references

Matthew 24:11
and many false prophets will arise, and deceive many;
1 Timothy 5:15
For some have already turned aside after Satan.
James 2:19
You believe that there is one God; you do well: the demons also believe, and tremble.