39:20 The dangers that would assail the church at Ephesus were revealed to the apostle. "I know this," he said, "that after my departing shall grievous wolves enter in among you, not sparing the flock. Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them." Paul trembled for the church as, looking into the future, he saw the attacks which she must suffer from both external and internal foes. With solemn earnestness he bade his brethren guard vigilantly their sacred trusts. For an example he pointed them to his own unwearied labors among them: "Therefore watch, and remember, that by the space of three years I ceased not to warn everyone night and day with tears.