They claim that they know God. But, by their own works, they deny him, since they are abominable, and unbelieving, and reprobate, toward every good work
Other versions
King James Version
They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate. English Standard Version
They profess to know God, but they deny him by their works. They are detestable, disobedient, unfit for any good work.New International Version
They claim to know God, but by their actions they deny him. They are detestable, disobedient and unfit for doing anything good.