Acts 20:29

29 I know that after I leave, savage wolves will come in among you and will not spare the flock.

Read Acts 20:29 Using Other Translations

For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
I know that after my departure fierce wolves will come in among you, not sparing the flock;
I know that false teachers, like vicious wolves, will come in among you after I leave, not sparing the flock.