Parallel
Titus 1:16
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate (note: Or, void of judgment).
They profess to know God, but by their actions they deny Him. They are detestable, disobedient, and unfit for any good deed.