Charles Ellicott Commentary Acts 21:14

"And when he would not be persuaded, we ceased, saying, The will of the Lord be done." — Acts 21:14 (ASV)

The will of the Lord be done.—It is, perhaps, too much to see in these words an acceptance of his purpose as being in accordance with the will of the Lord. They were the natural expressions of resignation to what was seen to be inevitable, possibly used as a quotation from the prayer which the Lord had taught the disciples, and which He had used Himself (Luke 22:42).