Jude 1:4

for certain persons have slipped in by stealth (their doom has been predicted long ago), impious creatures who pervert the grace of our God into immorality and disown our sole liege and Lord, Jesus Christ.

Galatians 2:4

There were traitors of false brothers, who had crept in to spy out the freedom we enjoy in Christ Jesus; they did aim at enslaving us again.

1 Peter 2:8

a stone over which men stumble and a rock of offence; they stumble over it in their disobedience to God's word. Such is their appointed doom.

1 John 2:22

Who is the real liar? who but he who denies that Jesus is the Christ? This is 'antichrist,' he who disowns the Father and the Son.

2 Timothy 3:6

Some of them worm their way into families and get hold of the women-folk who feel crushed by the burden of their sins ??wayward creatures of impulse,

Matthew 13:25

but while men slept his enemy came and resowed weeds among the wheat and then went away.

John 17:3

And this is eternal life, that they know thee, the only real God, and him whom thou hast sent, even Jesus Christ.

Acts 11:23

When he came and saw the grace of God he rejoiced, and encouraged them all to hold by the Lord with heartfelt purpose

Acts 15:24

Having learned that some of our number, quite unauthorized by us, have unsettled you with their teaching and upset your souls,

Romans 6:1-2

Now what are we to infer from this? That we are to 'remain on in sin, so that there may be all the more grace'?

Romans 9:21-22

What! has the potter no right over the clay? Has he no right to make out of the same lump one vessel for a noble purpose and another for a menial?

Galatians 5:13

Brothers, you were called to be free; only, do not make your freedom an opening for the flesh, but serve one another in love.

Titus 1:15-16

For the pure all things are pure, but nothing is pure for the polluted and unbelieving; their very mind and conscience are polluted.

Titus 2:11-12

For the grace of God has appeared to save all men,

Hebrews 12:15-16

see to it that no one misses the grace of God, that no root of bitterness grows up to be a trouble by contaminating all the rest of you;

1 Peter 2:16

Live like free men, only do not make your freedom a pretext for misconduct; live like servants of God.

1 Peter 4:18

If the just man is scarcely saved, what will become of the impious and sinful?

2 Peter 2:1-3

Still, false prophets did appear among the People, as among you also there will be false teachers, men who will insinuate destructive heresies, even disowning the Lord who ransomed them; they bring rapid destruction on themselves,

2 Peter 2:5-6

if he did not spare the ancient world but kept Noah, the herald of righteousness, safe with seven others, when he let loose the deluge on the world of impious men:

2 Peter 2:10

particularly those who fall in with the polluting appetite of the flesh and despise the Powers celestial. Daring, presumptuous creatures! they are not afraid to scoff at the angelic Glories;

2 Peter 2:18-22

By talking arrogant futilities they beguile with the sensual lure of fleshly passion those who are just escaping from the company of misconduct ??19 promising them freedom, when they are themselves enslaved to corruption (for a man is the slave of whatever overpowers him).

2 Peter 3:7

but the present heavens and earth are treasured up by the same word for fire, reserved for the day when the impious are doomed and destroyed.

Jude 1:15

to execute judgment upon all, and to convict all the impious of all the impious deeds they have committed, and of all the harsh things said against him by impious sinners.

Revelation 15:4

Who shall not fear, O Lord, and glorify thy name? for thou alone art holy. Yea, all nations shall come and worship before thee, for thy judgments are disclosed."

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 resowed weeds among the wheat and then went away.
Acts 15:24
Having learned that some of our number, quite unauthorized by us, have unsettled you with their teaching and upset your souls,
Galatians 2:4
There were traitors of false brothers, who had crept in to spy out the freedom we enjoy in Christ Jesus; they did aim at enslaving us again.
2 Timothy 3:6
Some of them worm their way into families and get hold of the women-folk who feel crushed by the burden of their sins ??wayward creatures of impulse,
2 Peter 2:1
Still, false prophets did appear among the People, as among you also there will be false teachers, men who will insinuate destructive heresies, even disowning the Lord who ransomed them; they bring rapid destruction on themselves,

Who

Romans 9:21
What! has the potter no right over the clay? Has he no right to make out of the same lump one vessel for a noble purpose and another for a menial?
1 Peter 2:8
a stone over which men stumble and a rock of offence; they stumble over it in their disobedience to God's word. Such is their appointed doom.
2 Peter 2:3
in their lust they will exploit you with cunning arguments ??men whose doom comes apace from of old, and destruction is awake upon their trail.

Turning

Romans 6:1
Now what are we to infer from this? That we are to 'remain on in sin, so that there may be all the more grace'?
Galatians 5:13
Brothers, you were called to be free; only, do not make your freedom an opening for the flesh, but serve one another in love.
Titus 2:11
For the grace of God has appeared to save all men,
Hebrews 12:15
see to it that no one misses the grace of God, that no root of bitterness grows up to be a trouble by contaminating all the rest of you;
1 Peter 2:16
Live like free men, only do not make your freedom a pretext for misconduct; live like servants of God.
2 Peter 2:10
particularly those who fall in with the polluting appetite of the flesh and despise the Powers celestial. Daring, presumptuous creatures! they are not afraid to scoff at the angelic Glories;

Denying

Titus 1:15
For the pure all things are pure, but nothing is pure for the polluted and unbelieving; their very mind and conscience are polluted.
2 Peter 2:1
Still, false prophets did appear among the People, as among you also there will be false teachers, men who will insinuate destructive heresies, even disowning the Lord who ransomed them; they bring rapid destruction on themselves,
1 John 2:22
Who is the real liar? who but he who denies that Jesus is the Christ? This is 'antichrist,' he who disowns the Father and the Son.

General references

Matthew 24:11
Many false prophets will rise and mislead many.
1 Timothy 5:15
As it is, some widows have already turned after Satan. ??16 Any believer, man or woman, who has widowed relatives, must give them relief; the church is not to be burdened with them; she has to relieve the widows who really need relief.
James 2:19
You believe in one God? Well and good. So do the devils, and they shudder.