By the time Paul left Philippi, a rather vibrant ekklesia had been established and met in Lydia's house. Who were the "believers" (Acts 17:40) in this ekkelsia? We know that according to the narrative in Acts, they include Lydia and her household (Acts 16:15) and the jailer and his household (Acts 16:34). We can only conjecture that the other women who gathered with Lydia by the river (Acts 16:13) and the slave girl delivered from the spirit of Python (Acts 16:16-18) would most likely join this group of believers as well. By the time Paul left Philippi, the first ekklesia established in Macedonia would number approximately 15-20 by my estimation.
If we take a look at the composition of the believers in Philippi, this fledgling church is anything but homogeneous. People from various social status and standing form this church, and it cuts across the social structure of the day. From the rich (e.g., Lydia) to the poor (e.g., the slave girl), they worship the Lord together.
Apart from its diverse social economic set up, what are some of the characteristics of this ekklesia?