<p>16:15 <i>Greet Philologus- </i>Another common slave name.</p><p><i>And Julia</i>- The commonest name for female slaves in the imperial household because of Julius Caesar. Perhaps the wife of Philologus.</p><p><i>Nereus</i> <i>and his sister and Olympa</i>- This name is found in inscriptions from the imperial household. Along with Julia, there is reason to think that there was a house group of Christians right in Caesar's household, comprised of believers whom Paul had personally known or maybe converted in other parts of the empire. Remember he had never yet visited Rome. We marvel how many slaves Paul knew personally. He, the Jewish rabbi, the intellectual, the educated and literate- had mixed with and converted those at the very lowest level of the social ladder. Many slaves could not easily get away from their masters, and so we imagine Paul entering the wealthy homes where they worked and lived.</p><p><i>And all the saints that are with them- </i>As noted on :14, this would seem to refer to house churches connected with each name.</p>