Through Christ's work, you will gain new brothers and sisters. These will be people who are doing the good work along with you. These people may become closer to you than the family you were born to. Pastor Ed tells us today that Epaphroditus was a man whom under any other circumstances, Paul would likely had not ever talked to. They had ethnic backgrounds, which at that time would have prevented them from interaction, but through the common goal of Christ's work, they became family.