Titus 1:16

They profess to know God, but by their actions they disown him. They are degraded and self-willed; and, as far as anything good is concerned, they are utterly worthless.

1 John 2:4

The man who says 'I know Jesus,' but does not lay his commands to heart, is a liar, and the Truth has no place in him;

1 Timothy 5:8

Any one who fails to provide for his own relations, and especially for those under his own roof, has disowned the Faith, and is worse than an unbeliever.

2 Timothy 3:5-8

and while they retain the outward form of religion, they will not allow it to influence them. Turn your back on such men as these.

Jude 1:4

For there have crept in among you certain godless people, whose sentence has long since been pronounced, and who make the mercy of God an excuse for profligacy, and disown our only lord and master, Jesus Christ.

Revelation 21:8

But as for cowards, unbelievers, the degraded, murderers, the impure, sorcerers, idolaters, and all liars--their place will be in the burning lake of fire and sulphur. That is the Second Death.'

Romans 1:28

Then, as they would not keep God before their minds, God abandoned them to depraved thoughts, so that they did all kinds of shameful things.

Ephesians 5:6

Do not let any one deceive you with specious arguments. Those are the sins that bring down the Wrath of God upon the disobedient.

Revelation 21:27

'Never shall any unhallowed thing enter it,' nor he whose life is shameful and false, but only 'those whose names have been written in the Lamb's Book of Life.'

1 Timothy 1:9

by one who recognizes that laws were not made for good men, but for the lawless and disorderly, for irreligious and wicked people, for those who are irreverent and profane, for those who ill-treat their fathers or mothers, for murderers,

Romans 2:18-24

And, having been carefully instructed from the Law, have learned to appreciate the finer moral distinctions.

Treasury of Scripture Knowledge

Summary

They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.

And disobedient

Bible References

Profess

Romans 2:18
And, having been carefully instructed from the Law, have learned to appreciate the finer moral distinctions.
2 Timothy 3:5
and while they retain the outward form of religion, they will not allow it to influence them. Turn your back on such men as these.
Jude 1:4
For there have crept in among you certain godless people, whose sentence has long since been pronounced, and who make the mercy of God an excuse for profligacy, and disown our only lord and master, Jesus Christ.

Being

Revelation 21:8
But as for cowards, unbelievers, the degraded, murderers, the impure, sorcerers, idolaters, and all liars--their place will be in the burning lake of fire and sulphur. That is the Second Death.'

And disobedient

Ephesians 5:6
Do not let any one deceive you with specious arguments. Those are the sins that bring down the Wrath of God upon the disobedient.
1 Timothy 1:9
by one who recognizes that laws were not made for good men, but for the lawless and disorderly, for irreligious and wicked people, for those who are irreverent and profane, for those who ill-treat their fathers or mothers, for murderers,

Unto

Romans 1:28
Then, as they would not keep God before their minds, God abandoned them to depraved thoughts, so that they did all kinds of shameful things.
2 Timothy 3:8
Just as Jannes and Jambres opposed Moses, so do these people, in their turn, oppose the Truth. Their minds are corrupted, and, as regards the Faith, they are utterly worthless.