During the time of Paul's ministry in Ephesus, Philemon had likely journeyed to the city, heard Paul's preaching and became a Christian.
Sa pagmiministeryo ni Pablo sa Efeso, nagkita sila doon ni Filemon at doon nakarinig ng Ebanghelyo at naging Kristiyano si Filemon. Pinagnakawan ni Onesimo ang kanyang panginoong si Filemon at tumakas pagkatapos.