For I know this, that after my departing shall grieuous wolues enter in among you, not sparing the flocke.
- King James Version (1611) - View 1611 Bible Scan

"I know that after my departure savage wolves will come in among you, not sparing the flock;
- New American Standard Version (1995)

I know that after my departing grievous wolves shall enter in among you, not sparing the flock;
- American Standard Version (1901)

I am conscious that after I am gone, evil wolves will come in among you, doing damage to the flock;
- Basic English Bible

[For] *I* know [this,] that there will come in amongst you after my departure grievous wolves, not sparing the flock;
- Darby Bible

For I know this, that after my departure grievous wolves will enter in among you, not sparing the flock.
- Webster's Bible

I know that, when I am gone, cruel wolves will come among you and will not spare the flock;
- Weymouth Bible

For I know that after my departure, vicious wolves will enter in among you, not sparing the flock.
- World English Bible

Y woot, that aftir my departyng, rauyschinge wolues schulen entre in to you, `and spare not the flok;
- Wycliffe Bible

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

Wesley's Notes for Acts 20:29

20:29 Grievous wolves - From without, namely, false apostles. They had, not yet broke in on the Church at Ephesus.

People's Bible Notes for Acts 20:29

Ac 20:29-31 Grievous wolves. The figure of the flock is still kept up. The "grievous wolves" were false teachers, and the special reference is to the Judaizing teachers, who taught that the Gentile Christians must keep the Jewish law. Paul's ministry was a long battle with the schismatics. See 1Ti 1:3,4,20; 2Ti 1:15 2:17. See also 3Jo 1:9,10. By turning to these references the names of some six of these "grievous wolves" will be found. Also in Revelation we learn that there were false teachers at Ephesus (Re 2:6).