Acts of the Apostles 20:28-31

“So guard yourselves and God’s people. Feed and shepherd God’s flock—his church, purchased with his own blood—over which the Holy Spirit has appointed you as leaders. I know that false teachers, like vicious wolves, will come in among you after I leave, not sparing the flock. Even some men from your own group will rise up and distort the truth in order to draw a following. Watch out! Remember the three years I was with you—my constant watch and care over you night and day, and my many tears for you.