Albert Barnes Commentary Acts 21:16

"And there went with us also [certain] of the disciples from Caesarea, bringing [with them] one Mnason of Cyprus, an early disciple, with whom we should lodge." — Acts 21:16 (ASV)

One Mnason of Cyprus. The original text here would be better translated: "And brought us to Mnason of Cyprus, an old disciple," etc. It is evident that though Mnason was originally of Cyprus, yet he was now an inhabitant of Jerusalem and was well known to the disciples at Caesarea. It is possible that he might have been at Caesarea and accompanied Paul to Jerusalem; but the more correct interpretation of the passage is that Paul and his fellow travelers were conducted to his house in Jerusalem, and that he was not with them on the journey.

Of Cyprus. See Barnes on Acts 4:36.

An old disciple. An early convert to Christianity—perhaps one who was converted before the crucifixion of the Saviour.

With whom we should lodge. In whose house we were to lodge. The rites of hospitality were shown in a notable manner by the early Christians.