Titus 1:16

These people claim to know God [as Savior], but they deny Him by their actions, so they are detestable and disobedient and unfit for doing anything good.

1 Timothy 1:10

for sexually immoral people, for homosexuals, for kidnappers, for liars, and for people who give false testimony. And [law is for] everything else that is against the sound teaching

2 Timothy 3:5

[These people] maintain an appearance of being godly, but they have denied its power; [you should] turn away from such people.

Treasury of Scripture Knowledge

Summary

And though they say, The LORD liveth; surely they swear falsely.

Bible References

Though

1 Timothy 1:10
for sexually immoral people, for homosexuals, for kidnappers, for liars, and for people who give false testimony. And [law is for] everything else that is against the sound teaching
2 Timothy 3:5
[These people] maintain an appearance of being godly, but they have denied its power; [you should] turn away from such people.
Titus 1:16
These people claim to know God [as Savior], but they deny Him by their actions, so they are detestable and disobedient and unfit for doing anything good.