For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
Paul knows grievous wolves will invade once he departs because his presence, empowered by the Spirit, bridles the wicked and drives back Satan's darkness. When he leaves, greater dangers hang over their heads, and the pastors must watch far more carefully than before.
AI summary
Paul sent for these elders not to leave them, but to instruct and encourage them in the work they had undertaken. His life among them, serious, gracious, heavenly, no self-seeking, proved God was truly with him and animated him by a better spirit than his own.
AI summary
Commenting on Acts 20:17-35
And now brethren,.... So the apostle calls the elders of the church at Ephesus; though they had not the same gifts, and were not in the same high office as he was, yet he puts himself upon a level with them, as if he and they were fellow elders, as Peter calls himself, Pe1 5:1 which is an instance of the apostle's humility and affection...