Titus 1 16
They profess to know God [to recognize and be acquainted with Him], but by their actions they deny and disown Him. They are detestable and disobedient and worthless for good work of any kind.
Compare with other 3 random translations
ASV Titus 1:16They profess that they know God; but by their works they deny him, being abominable, and disobedient, and unto every good work reprobate.
NLT Titus 1:16Such people claim they know God, but they deny him by the way they live. They are detestable and disobedient, worthless for doing anything good.
FBV Titus 1:16They claim to know God, but they prove this is false by what they do. They are detestable and disobedient, worthless for doing anything good.