"this passionate appeal for Philemon to welcome his slave as a brother in the Lord explains Paul’s intention to include the members of the house church in the reading of the letter. If Paul’s efforts are successful in helping Philemon to embrace Onesimus as a brother in the Lord, that welcome will also need to be extended to him by the other brothers and sisters in the Lord in the little house church that met in Philemon’s house."
"The Puzzling Plurals in Philemon,"
Journal of Applied Christian Leadership:
Available at: https://digitalcommons.andrews.edu/jacl/vol9/iss1/2