Acts 20:29-32

I know that after I leave, savage wolves will come in among you and will not spare the flock. Even from your own number men will arise and distort the truth in order to draw away disciples after them. So be on your guard! Remember that for three years I never stopped warning each of you night and day with tears. “Now I commit you to God and to the word of his grace, which can build you up and give you an inheritance among all those who are sanctified.