Titus 1:16

They profess to know God; but by their works they deny Him; being abominable, and disobedient, and for every good work worthless.

1 John 2:4

He who says, "I have known Him," and does not keep His commandments, is a liar, and the truth is not in him;

1 Timothy 5:8

But, if any one provides not for his own, and especially for his own household, he has denied the faith, and is worse than an unbeliever.

2 Timothy 3:5-8

holding a form of godliness, but denying the power thereof: from these also turn away.

Jude 1:4

For there crept in stealthily certain men, who of old were set forth for this condemnation, ungodly men, changing the grace of our God into lasciviousness; and denying the only Master and our Lord Jesus Christ.

Revelation 21:8

But, for the fearful, and unbelieving, and abominable, and murderers, and fornicators, and sorcerers, and idolaters, and all the liars, their part shall be in the lake that burns with fire and brimstone; which is the second death."

Romans 1:28

And, as they did not approve the holding of God in their knowledge, God delivered them up to a reprobate mind, to do those things which are not becoming;

Ephesians 5:6

Let no one deceive you with empty words; for, because of these things, comes the wrath of God upon the sons of disobedience.

Revelation 21:27

And there shall in nowise enter into it any thing unclean, or he that works abomination and a lie; but only those written in the Lamb's book of life.

1 Timothy 1:9

knowing this, that law is not enacted for a righteous man, but for lawless and unruly ones, for ungodly and sinful, for unholy and profane, for patricides, and matricides, for man-slayers,

Romans 2:18-24

and understand His will, and approve the things that are excellent, being instructed out of the law,

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 understand His will, and approve the things that are excellent, being instructed out of the law,
2 Timothy 3:5
holding a form of godliness, but denying the power thereof: from these also turn away.
Jude 1:4
For there crept in stealthily certain men, who of old were set forth for this condemnation, ungodly men, changing the grace of our God into lasciviousness; and denying the only Master and our Lord Jesus Christ.

Being

Revelation 21:8
But, for the fearful, and unbelieving, and abominable, and murderers, and fornicators, and sorcerers, and idolaters, and all the liars, their part shall be in the lake that burns with fire and brimstone; which is the second death."

And disobedient

Ephesians 5:6
Let no one deceive you with empty words; for, because of these things, comes the wrath of God upon the sons of disobedience.
1 Timothy 1:9
knowing this, that law is not enacted for a righteous man, but for lawless and unruly ones, for ungodly and sinful, for unholy and profane, for patricides, and matricides, for man-slayers,

Unto

Romans 1:28
And, as they did not approve the holding of God in their knowledge, God delivered them up to a reprobate mind, to do those things which are not becoming;
2 Timothy 3:8
And as Jannes and Jambres withstood Moses, so also do these withstand the truth; men utterly corrupted in mind, disapproved concerning the faith.