Philemon 1:14 - Matthew Poole's English Annotations on the Holy Bible

But without thy mind would I do nothing; but he was thy servant, and I would not do it without thy knowledge and consent, that it might not be thought that thou hadst done me a kindness necessarily, but that thou mightest do it freely. That thy benefit should not be as it were of necessity, but willingly: which seems to argue that St. Paul expected that he, being reconciled to Onesimus, should send him back to Paul; unless he means the benefit done to Onesimus, in not revenging the wrong he had done him, should not be of necessity, because he was out of his reach, but freely, having him first in his power.