As far as I can see from the evidence of the New Testament, there were no solitary Christians. If you were a Christian, this meant that you were an integral part of the community of Christians. The one possible exception is found in the story of the eunuch who was converted by Philip and who afterwards disappears from the pages of the Bible. I suspect, however, that he was not a true exception; if he was a genuine convert, he undoubtedly gathered others about him after his return home, so that another Christian fellowship was founded. If he did not do this, he almost certainly ceased to be a Christian.

There is much evidence in the New Testament, and particularly in the book of Acts, as to the quality of the relationship between the members of the Christian fellowship. “How these Christians love one another!” was said of them in astonishment. There was a closeness among them, an affection. We know that they felt the need to meet together frequently, to pray together, to sing together, to eat together, to rejoice together, to support one another in affliction. There was also evidently a feeling among them that they were a part of something significant, something to which each person in the group was important. Each one had a part to play, whether in teaching, in curing the sick, in the giving of hospitality, in the care of the poor, in proselytizing or in preaching, and all of these essential activities were a part of the one great task in which the whole community shared: the expression of the good news they as Christians had received. So the contribution of each member of the fellowship was significant, and consequently his life took on meaning and dignity.

–Helen G. Hole in Pendle Hill Pamphlet 123: Prayer