Mnason in Wikipedia

"Reminding, or remembrancer". A Christian of Jerusalem with whom Paul lodged ((Act 21:16 ). He was apparently a native of Cyprus, like Barnabas ((Act 11:19-20 ), and was well known to the Christians of Caesarea ((Act 4:36 ). He was an "old disciple" (R.V., "early disciple"), i.e., he had become a Christian in the beginning of the formation of the Church in Jerusalem.

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