Acts 20:29-31

Young's Literal Translation

²⁹ for I have known this, that there shall enter in, after my departing, grievous wolves unto you, not sparing the flock,

³⁰ and of your own selves there shall arise men, speaking perverse things, to draw away the disciples after them.

³¹ `Therefore, watch, remembering that three years, night and day, I did not cease with tears warning each one;