There are about 114 references in the New Testament that use the word ‘church’. The Greek meaning of the word ‘church’ in scriptures is ekklesia – from ek – out of, and klesis – a calling (kaleo –to call) – hence, the called-out (ones). The Greeks used the word ekklesia to describe a body of citizens gathered to discuss the affairs of State. It was an assembly called out by designated officers possessing political power and governing functions. The Greek ekklesia had no resemblance to the church ekklesia in New Testament times. The only similarities would be the dynamic of called out to gather, but the church gathered under the Headship of Jesus Christ only. (Col. 1:18)
http://docs.alanknox.net/Developing_a_Biblical_Ecclesiology_Outline.pdf – the meeting of the church
The work of the church is to make disciples.