Jude 1:4

For some men have come in by deception, who were of old appointed to this judgment, impious, changing the grace of our God into lewdness, and denying our only master and Lord, Jesus Christ.

Galatians 2:4

but on account of false brothers brought in secretly to act as spies against our liberty which we have in Christ Jesus, to bring us into servitude,

1 Peter 2:8

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

1 John 2:22

Who is a liar but he that denies that Jesus is the Christ? This is the anti-christ, [the man that] denies the Father and the Son.

2 Timothy 3:6

Of these are those who go into the houses and take captive foolish women loaded with sins, and led by various desires,

Matthew 13:25

and while the men slept, his enemy came and sowed poisonous darnel in the midst of the wheat, and went away.

John 17:3

And this is the eternal life; that they shall know thee, the only true God, and Jesus Christ whom thou hast sent.

Acts 11:23

who having come and seen the grace of God rejoiced, and exhorted all to adhere to the Lord with the purpose of the heart;

Acts 15:24

Since we heard that some going out from us have troubled you with words subverting your souls, to whom we gave no charge,

Romans 6:1-2

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

Romans 9:21-22

or has not the potter a right, in respect to the clay, to make of the same mass one vessel to honor and another to dishonor?

Galatians 5:13

For you are called to liberty, brothers, only make not your liberty an occasion for the flesh, but by love serve one another.

Ephesians 4:14

that we may be no longer children, driven about like waves and carried about with every wind of doctrine, by the art of men, and the craftiness of deceitful wiles,

1 Timothy 6:15-16

which the blessed and only Potentate will show in its times, the King of kings and Lord of Lords,

Titus 1:15-16

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

Titus 2:11-12

For the grace of God that pertains to salvation appeared to all men,

Hebrews 12:15-16

taking care that no one may come short of the grace of God, that no root of bitterness springing up may make trouble and by it many be defiled,

1 Peter 2:16

as free, and not using freedom for a cloak of vice, but as servants of God.

1 Peter 4:18

And if the righteous man is scarcely saved, where will the ungodly and the sinner appear?

2 Peter 2:1-3

But there were also false prophets among the people, as there shall also be false teachers among you, who shall bring in by stealth destructive heresies, even denying the master that bought them, bringing on themselves swift destruction;

2 Peter 2:5-6

and spared not the old world, but preserved Noah a preacher of righteousness, with seven others, bringing the flood on the world of the ungodly,

2 Peter 2:10

but especially those who walk after the flesh, in corrupt desires, and despise goverment. Presumptuous, self-complacent, they fear not to revile glories,

2 Peter 2:18-22

For speaking extravagant words of vanity, they entice with carnal desires of lewdness those scarcely escaped from them, those living in error,

2 Peter 3:7

But the present heavens and the earth have been preserved by his word, being kept for fire, at the day of the judgment and destruction of wicked men.

Jude 1:15

to execute judgment on all, and to convict all the wicked among them of all the deeds of impiety which they have impiously committed, and of all the hard speeches which impious sinners have spoken against him.

Revelation 15:4

who shall not fear thee, Lord, and glorify thy name? For thou only art holy, for all the nations shall come and worship before thee, for thy righteous ordinances have been 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
and while the men slept, his enemy came and sowed poisonous darnel in the midst of the wheat, and went away.
Acts 15:24
Since we heard that some going out from us have troubled you with words subverting your souls, to whom we gave no charge,
Galatians 2:4
but on account of false brothers brought in secretly to act as spies against our liberty which we have in Christ Jesus, to bring us into servitude,
Ephesians 4:14
that we may be no longer children, driven about like waves and carried about with every wind of doctrine, by the art of men, and the craftiness of deceitful wiles,
2 Timothy 3:6
Of these are those who go into the houses and take captive foolish women loaded with sins, and led by various desires,
2 Peter 2:1
But there were also false prophets among the people, as there shall also be false teachers among you, who shall bring in by stealth destructive heresies, even denying the master that bought them, bringing on themselves swift destruction;

Who

Romans 9:21
or has not the potter a right, in respect to the clay, to make of the same mass one vessel to honor and another to dishonor?
1 Peter 2:8
and a stone of stumbling and rock of offense, who stumble at the word, being disobedient, to which also they were appointed.
2 Peter 2:3
and with covetousness they will make a gain of you with feigned words, whose judgment a long time lingers not, and their destruction slumbers not.

Turning

Romans 6:1
WHAT shall we say then? Shall we continue in sin, that the grace may abound?
Galatians 5:13
For you are called to liberty, brothers, only make not your liberty an occasion for the flesh, but by love serve one another.
Titus 2:11
For the grace of God that pertains to salvation appeared to all men,
Hebrews 12:15
taking care that no one may come short of the grace of God, that no root of bitterness springing up may make trouble and by it many be defiled,
1 Peter 2:16
as free, and not using freedom for a cloak of vice, but as servants of God.
2 Peter 2:10
but especially those who walk after the flesh, in corrupt desires, and despise goverment. Presumptuous, self-complacent, they fear not to revile glories,

Denying

Titus 1:15
To the pure all things are pure; but to the defiled and unbelieving, nothing is pure; but their mind and conscience are defiled.
2 Peter 2:1
But there were also false prophets among the people, as there shall also be false teachers among you, who shall bring in by stealth destructive heresies, even denying the master that bought them, bringing on themselves swift destruction;
1 John 2:22
Who is a liar but he that denies that Jesus is the Christ? This is the anti-christ, [the man that] denies the Father and the Son.

General references

Matthew 24:11
and many false prophets shall be raised up and deceive many,
1 Timothy 5:15
for some have already turned back after Satan.
James 2:19
You believe that there is one God? You do well; demons also believe and tremble.